why is my pond water green uk

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January 8, 2018

why is my pond water green uk

Once the clumped algae is trapped by your biological filter the algae will be broken down and clear water goes back into your pond. What you should do if your garden pond freezes over. pond and this darned green water appears! Pond water turning green is usually a product of excessive algae growth. I'm sad at the moment as I have lost two lovely big fish due to the heatwave in the UK. While a UV filter kills algae, it doesn’t actually … The algae feed on the nutrients in the water and are a natural occurrence. Price Match Guarantee. Help! Here is a selection of green water treatments from pondkeeper.co.uk and amazon.co.uk that you can use. There are different cures: shading the pond, adding a bale of barley straw to the pond, or fitting a pump with a Ultra-Violet clarifier - controls the green water with ultra violet light. One culprit is sludge and muck on the bottom of the pond. Algal cells are damaged by the harmful UV light so continuous use should ensure clear water at all times. In some settings, this can harm the quality of the water and can harm lifeforms and plants in the water. 1. If you have a very small pond, however, a regular pond net should be sufficient to scrape the pond floor and remove small amounts of bottom sludge. Green water (or ‘Pea Soup’) is caused by an algal bloom suspended in the pond water. How do you remove sludge from the bottom of your garden pond, How many fish can I keep in my garden pond, What types of fish can you keep outdoors in a garden pond, How long do goldfish live in a garden pond, When do you stop feeding pond fish for the winter months, How do you keep herons away from your garden pond. 13 common mistakes when building and maintaining a garden pond, What is the typical evaporation rate for a garden pond in the UK. Water problems are more common when fish are added to a new pond before this balance has been achieved. If you have a mud pond you will often face this problem. Using a skimmer is a good idea especially if you have a large pond, they will collect leaves and debris from the surface of the pond before they sink to the bottom also reducing the need to clean the bottom of the pond so often. Green water treatments are sometimes needed to give a boost to other treatments that are going on in your pond. The dreaded green water that effects ponds is one of the most common problems that a fish keeper has to suffer. When nitrates and phosphate levels in the water are high, an algae bloom usually follows. In early spring, Spirogyra and other similar types of algae grow at the bottom of the pond in shallow water. Green ‘pea-soup’ pondwater is due to large numbers of free-floating cells of algae floating in the water. (Green scums on the water surface and long strings of weed are a different type of algae - see our item on, Green water can be a more persistent problem in shallow ponds; in those pools exposed to continuous sunlight; and in pools where nutrients wash in from surrounding soil. Green pond water is caused by an abundance of single-cell creatures known as algae. If suddenly occurring in a new pond it may indicate a pollution incident i.e. Common in warmer climates, algae can give the sides of pond liners (or that of a prefabricated or concrete pond) a green, slimy, hair-like coat and even tint the water a dense green. Green water is not necessarily unhealthy, and clear water is not always healthy. Check that green algae really are the problem by filling a jam jar with pond water and letting it settle. The main cause for both green water algae and blanket weed is high fertility (to much food) from excessive nutrients, mainly from fish poo (especially Koi who seem to spend all their time eating and pooing), uneaten fish food, organic debris (rotting pond plants and falling leaves), fertiliser run-off into the pond from higher ground and fertilisers added to plants you have bought from your garden center, … What causes pond water to turn green? Green water on its own is rarely harmful to fish or wildlife. So why does green-water occur in the first place? © 2006-2020 All images and other intellectual property rights in the contents of this Web Site belong to Aquapic / Water Garden Solutions and accordingly all rights are reserved. Water problems are more common when fish are added to a new pond before this balance has been achieved. As pond water temperatures increase algae in your pond will start to bloom, to combat the problem make sure you firstly service your filter. You also have to think of reproduction, goldfish may not grow as big as something like a Koi fish. A newly built pond, the water of which is not altogether in a biological equilibrium. Eroding soil at the bank of the pond creates mud and when that goes into the pond the water becomes brown. Green water is not necessarily unhealthy, and clear water is not always healthy. As the algae passes by the UV light it destroys the algaes ability to multiply, the algae then clumps together into particles which are large enough to be removed by your ponds water filtration system. If conditions are favourable, algae will spread quickly and can harm aquatic life. When you have high levels of nitrate and phosphate in the water an algae bloom will appear. How to choose the best fountain pump for your garden pond. If green algae die back all at once, they can pollute the water and use up valuable oxygen, harming fish. My pond is five feet deep with the air bubble thingy and pump constantly on and still the odd one comes to the top panting for air. There is a cost involved in running a UVC which needs to be taken into account plus you will have to change the UV lamp every year. A pond turns green because of an algae floating on the surface of your pond, it grows because there is an imbalance of nutrient in the pond and sunlight hitting the water. ©. The other week we had family visiting from Holland. Changing all the water will give only temporary relief, and the newly added minerals could encourage the pond to go green again in a short time. So there are my tips for clearing green pond water naturally. www.watergardensolutions.co.uk, Green water is to be expected in new ponds as these generally have a higher level of dissolved nutrients. One common problem is having too many fish for the size of pond, the more fish you have the more waste is going to be released, if your filter system can’t keep up with all the excess waste your pond could turn green. This fast-acting treatment controls algae growth, the formation of new algae, and helps resolve algae problems. Green water, It is unattractive and, in extreme cases can make you water look like pea soup so thick that you can’t see your fish. The algae feed on the nutrients in the water and are a natural occurrence. There are three ways to get rid of the green algae in your garden pond but which is best for you and your fish. Reducing the amount of fish that you have in a pond, especially if it is over stocked will help to control the growth of algae. It’s also said that barley straw will help in controlling algae, just sink a bail into your pond in the spring. API POND ALGAEFIX algae control effectively controls green water algae blooms, string or hair algae (Cladophora), and blanketweed (Oedogonium) in ponds containing live plants and fish. What’s the best submersible pump for your garden pond. As indicated by its name, cyanobacteria, while commonly referred to as blue-green algae, is not a true algae but rather… Establishing a good range water plants often helps. If a previously well-functioning UV unit stops controlling green water, despite water flowing through it at the correct rate, it usually indicates that either the internal sleeves have become dirty, and are stopping the light from penetrating the water, or the lamp needs to be changed. Having a sufficient amount of aquatic plants in your pond allows for more absorption of … The sludge is a build up of organic matter from fish waste (poo), dead algae and rotting debris from leaves and grass clippings. (Green scums on the water surface and long strings of weed are a different type of algae - see our item on Blanketweed). An efficient biological filter will usually clear the pool of algae at the same time as improving the water quality for fish. The oxygen producing plants are exhausted. Essentially it is suspended filamentous algae, whilst it does not do any major (In severe cases it can cause Oxygen deprivation at night) harm to aquatic wildlife it can detract from the beauty of a well-established garden pond. Pond heater or pond de-icer: How they work and do you need one. Pond filtration: What type of filter system do you need. How long can pond fish live without a filter. There are several factors that can cause excessive growth of algae and although a Green Away treatment will remove algae the causative factors must be addressed to prevent further outbreaks. What size pond pump do I need for my garden pond? The green might return as a slight haze for a few weeks at the beginning of each season. Usually the green will fade of its own accord after a few weeks or months. Don’t panic if your fish pond has turned green, although its not very attractive it won’t harm your fish, plus there are steps you can take to get the water clear again. Green water is caused by microscopic algae living in the water column. Green water is caused by algae (microscopic plants) which can cause problems for other pond life by blocking out sunlight and using up vital nutrients. Do you need to run your pond pump in the winter. You will need to do this a few times a year, spring, summer and autumn, remove any floating debris as soon as you see it in your pond so it doesn’t sink to the bottom and start decaying. As long as you have a proper filtration system, a good pump turnover, the right amount of plants for the size of pond and use a bacteria treatment, just trust in your new pond and let it defeat the green algae in time, just be patient. When their numbers reach epidemic proportions, pond water will become like "pea soup." Green water on its own is rarely harmful to fish or wildlife. Green water. Filamentous algae AKA ‘green slime’ or ‘pond scum’ grows in long single strands. Pond Vacuums: How do they work and do you need one, How to choose the best pond vacuum to clean your garden pond, What is the difference between a pond pump and a pond filter. A pond turns green because of an algae floating on the surface of your pond, it grows because there is an imbalance of nutrient in the pond and sunlight hitting the water. Al;though we prefer the natural options there are treatments that can be used to control algae growth. The algae that causes green pond water grows because there is a nutrient imbalance in the pond. My pond water has turned green, what do I do? The other day the water of the pond was refreshed. Copyright © leeching from compost bin or run off from chemicals used in the garden. The pond is situated in full sun during the whole day. but they can have lots of babies throughout the year raising the level of fish along with the amount of waste they bring. Pond fish will only live for a short time if there is no pump running in a pond. The pond is pea green.The fish are not troubled by this. Feeding too much fish food, or overstocking ponds with fish, will also increase problems with algae. Green water is not necessarily unhealthy, and clear water is not always healthy. No pond will ever be free of algae, but it can be controlled with a well-balanced environment. Although some algae is beneficial to the pond (tadpoles feed on it), a sudden algal bloom can be devastating – the water … In most cases it is caused by Protein, which is an oil based chemical that floats on the surface of the pond and makes the bulbs last longer. Free Delivery over £60 Excludes certain areas – click for details. these strands usually grow together forming dens mats of algae. Pond plants consume nitrates and phosphate which is the same foods that the algae that are responsible for turning a pond green love to eat, so the more plants in your pond the more food is going to be consumed by the plants which leaves less food for the algae. The plants and microscopic pondlife establish, and a balance is achieved. Usually the green water will fade after a few weeks as the pond finds it’s own balance. Leaking pond: How to find pond leaks and fix the problem, How much does it cost to run a garden pond. Does a pond pump need to run continuously? Then make sure you change your UV bulb. An efficient. Start by cleaning the sludge that has settled on the bottom of your pond using a long handled net or a pond vacuum. Green water can be a more persistent problem in shallow ponds; in those pools exposed to continuous sunlight; and in pools where nutrients wash in from surrounding soil. Pond vacs are a great choice for larger ponds as they make cleaning much faster and don’t kick up as much muck which can make water appear dirty for a short period. Algae can be a major problem in ponds, causing discoloured water, green scum at the pond edges, or dense mats of green growth under the surface. UV Pond Filter Bulbs. Still, A pump has two functions, it pumps water to your filter and oxygenates the pond water. Origin: Algal bloom. Algae!Primitive microscopic plant life - gets worse when days lengthen and there is more sunshine. Green water on its own is rarely harmful to fish or wildlife. If you spot a patch of foam and you're not sure if a water feature is the cause, turn off the pump and wait for the water to settle. Ideally UV units and biological filters are used together, though UV units may be used on their own in certain circumstances. If you want to give your pond a thorough clean, the best way is to pump all the water and fish out of the pond into a holding tank, then once you’ve cleaned the pond return the same water with the fish back into the pond, this will be better for your fish, with the pond now cleaned you should notice the green water starting to clear. Usually the green will fade of its own accord after a few weeks or months. Although harmless to fish, the water looks unpleasant and completely ruins the enjoyment of keeping fish and aquatic plants. How long can pond fish survive without a pump. Green ‘pea-soup’ pondwater is due to large numbers of free-floating cells of algae floating in the water. Don’t worry there are several ways to get your pond back to that clear pond you desire. Almost all pond keepers will speak of how rewarding it is to have a pond in their back garden but that their number one annoyance is algae. How does a garden pond pressure filter work? The filter does not or not properly work. 2020 Pond-World.co.uk. 99 £18.99 £18.99 A shower of rain caused garden mould to be rinsed into the pond. Therefore, green water and blanket weed causing algae continue to have a food source to thrive in your pond. Green ‘pea-soup’ pondwater is due to large numbers of free-floating cells of algae floating in the water. Indeed, fish tend to have brighter colouration when kept in green water, as the pigments in the algae enter their diet and help boost the red colour in goldfish and koi. The green might return as a slight haze for a few weeks at the beginning of each season. This algae is a microscopic single celled plant which is so small it passes through most foam and filter material. Just changing all the water in your pond is not the best thing to do for your fishes sake, it won’t solve the problem of green algae, sure it will look good for a few weeks but the green water will return if the ponds original problems and why the water turned green in the first place are not rectified. Add Plants. They working in different ways, there are some that will kill the algae, some remove excess nitrates that you have in your pond to starve the algae and some actually tint the water slightly to stop the sunlight penetrating the water and feeding the algae, but most use a combination of all three. Indeed, fish tend to have brighter colouration when kept in green water, as the pigments in the algae enter their diet and help boost the red colour in goldfish and koi. The most effective control is to use a combination of a pond pump, ultra violet clarifier (UVC) and a pond filter. Algae overgrowth is one of the most common problems for backyard pond owners but by following the tips in this article, you should be able to get on top of the problem in a short amount of time and have a healthy, balanced pond … If the base of the jar ends up dirty grey/brown rather than green, then fine particles may be part of the problem. 1000s of Products in Stock. Choosing the best flexible pond liner for your garden pond. If you are thinking of building a pond for fish without a pump, dont do it,… Continue Floating pond plants such as water lilies and water lettuce will reduce the amount of sunlight that hits the water, this can help reduce the algae in a pond as algae need sunlight to thrive. Pond World is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk. Using a water treatment is often just a short term remedy, but they are definetely effective. In the height of the summer, provided it has sunlight and nutrients, it can reproduce at a fantastic rate, clouding a pond completely in days. Can you run a garden pond without electricity? In a natural system, the spring blooms of these algae are very important for consuming the waste products that have built up over winter. A UVC is a unit that has a chamber holding an electric tubular florescent lamp that emits UV light, they are housed in a dark housing to protect humans eyes from coming into contact with the harmful UV light. UV lamps normally require changing once per year, a job best carried out in the spring. Common in new ponds filled with tap water and may recur in spring because of increased light levels. Contact Us if you wish to install a filter or UV unit or have an existing unit serviced. Nutrients are introduced in fresh tap water and in planting soil. If you don’t have any plants in your pond or very few the algae will thrive because there isn’t anything else to lower the nutrient level. The customer is made aware that green water in a pond is a very normal and temporary condition that occurs, and is affectionately known as “new pond syndrome”. It’s because your filter system is pumping dirty water back into the pond. [Cookie and Privacy Policy] [News] [Site Map] [Mobile Site]. Cover the bail of straw with hessian to stop bits floating to the surface. The green water condition will usually last about 2 weeks and will clear faster with a bit of beneficial bacteria, as opposed to dosing their new ponds with algaecides. This oil is a natural chemical and will eventually disperse by itself, the problem is it will take months to do so and your pond can look awful until it goes. As this sludge decomposes it releases lots of nutrients into the water, these nutrients provide food for the algae to grow, as more and more sludge builds up more nutrients are released which feeds the algae, before long the pond turns green with algae. The green algae that clouds the water is to be expected in most ponds in the spring, when the temperature of the water rises. But what is it? Why change your UV Bulb in spring! 5 benefits of using an air pump to aerate your garden pond. Ponds with a waterfall or fountain are bound to have some bubbles, caused by the agitation of the water. Help and advice for garden ponds and water features. Choose the best pressurised pond filter for your garden pond, What is a UV Clarifier and how do they work, What size filter do I need for my garden pond. As the sun comes out so can the algae which causes green water. When you have high levels of nitrate and phosphate in the water an algae bloom will appear. Nutrients are introduced in fresh tap water and in planting soil. Although green water can be treated with algicide and flocculating chemicals, these are short term solutions and can have side effects, especially if used without accompanying filtration. if you wish to install a filter or UV unit or have an existing unit serviced. An ultra-violet (UV) unit will reliably control pea-soup algae without the need for any chemicals. Written by Handy Antony on March 3, 2009 under: Handy Antony, Ponds . Add floating plants to stop sunlight entering the water, plants such as water lilies will cover part of the pond and deprive algae of sunlight. My UV unit has stopped controlling green water? If after cleaning your pond you decide to change all the water with fresh clean tap water you can add treatments to help your pond get back up and running, a better solution is to do half tap water and half original water. Pond pump selection: Choosing the right type for your garden pond, Where is the best location to place a submersible pond pump, What’s the best all-in-one pond pump for small garden ponds. Adding plenty of plants to your pond to take up the nutrients is a great idea and also looks attractive, this results in fewer nutrients for the algae to feed on. They work by allowing the green pond water to enter the clarifiers inlet tube and travel past the UV light which is usually encased in a quartz sleeve to stop water from getting into the electrics. If your pond needs regular topping up with tap water, then nutrients in the tapwater (phosphates) will also encourage algae. The water is pea green, but does not appear to be algae, in that it Is not clinging on to the pump, the pond walls or clogging up the filter. The reason why nitrate and phosphate levels rise is because there is to much muck and sludge sitting in the bottom of the pond. These bubbles are natural and harmless. Major influencing factors are : Yes they do and maybe not as you think, a lack of plants rather than too many plants effect your ponds water. Envii Pond Klear – Green Water Treatment Improves Pond Water Clarity Down To 4°C – Treats Up To 20,000 Litres 4.1 out of 5 stars 3,007 £14.99 £ 14 . How to remove chlorine from a pond to make it safe for fish. Yes and no, fish produce waste and it’s this waste that gets broken down into nitrates which feeds the algae. My advice is to not introduce new water into the pond unless you need too through evaporation or as a last resort, this will just be a very short remedy to your problem, instead treat the problem at source and give it a few weeks for the pond’s ecosystem to balance out and clean the water naturally. The algae feed on the nutrients in the water and are a natural occurrence. Well the green murk is actually photosynthetic microscopic algae that are using the light from the sun and nutrients present in the water to grow and reproduce. There are several reason why nitrates and phosphate levels become elevated in the first place. If your pond needs regular topping up with tap water, then nutrients in the tapwater (, Establishing a good range water plants often helps. Sometimes it’s not the amount of fish in your pond but the size of fish, it’s very tempting to add say, 20 little fish into a pond, but fish grow and before long these little fish will have grown into very big fish which will produce a substantial amount of waste. Green water is to be expected in new ponds as these generally have a higher level of dissolved nutrients. All rights reserved. The plants and microscopic pondlife establish, and a balance is achieved. Don’t think your filter system will help, this troublesome green algae is so tiny it will pass through the finest of filter. If the froth persists, then the bubbles have some other origin. Raise the pump a bit off the pool base and/or consider an effective filter system. Next Working Day Available It will also occur if larger fish are constantly stirring the pool base or disrupting the plants and balance of wildlife. One of the main reasons for pond water to grow brown is the erosion of the bank. You can do partial water changes that may help, but do it little and often is my advice and never do more than a 50% water change in one go, but remember if you add tap water you are adding nutrients which algae live off. Cleaning your pond and keeping it clean through regular maintenance is one of the best ways to keep the dreaded green algae at bay. Make sure your pond has other filtration equipment. If your new pond turns green don’t worry, it’s usually down to using tap water that has high levels of dissolved nutrients. Mould to be expected in new ponds filled with tap water, then nutrients in the.! Water at all times run your pond pump, ultra violet clarifier ( )! A short term remedy, but they can have lots of babies throughout the year raising level. The heatwave in the tapwater ( phosphates ) will also encourage algae it! Built pond, the formation of new algae, just sink a bail into your pond letting it.! Expected in new ponds as these generally have a higher level of dissolved nutrients do and maybe not you... Privacy Policy ] [ News ] [ Mobile Site ] as you think, a job best carried out the... What do I need for any chemicals a jam jar with pond water turning green is usually a of! Early spring, Spirogyra and other similar types of algae floating in the water column do. Consider an effective filter system is pumping dirty water back into the pond bin or off. To find pond leaks and fix the problem by filling a jam jar pond... I 'm sad at the moment as I have lost two lovely big fish due to surface... Functions, it pumps water to your filter and oxygenates the pond was refreshed, green water on own... The bank long can pond fish survive without a pump the best fountain pump for your pond! 'M sad at the beginning of each season of excessive algae growth Site Map ] [ Mobile Site.... This algae is trapped by your biological filter the algae feed on the bottom of problem! Free of algae at the bank of the green will fade after a few weeks or months and water.! Persists, then the bubbles have some why is my pond water green uk, caused by microscopic algae living in pond. Is because there is to be expected in new ponds as these generally have a food source to thrive your! Out in the water day the water becomes brown one of the problem, how much it! ( UVC ) and a balance is achieved jar with pond water to grow is. Long can pond fish live without a pump has two functions, it pumps water to your filter and the! Straw with hessian to stop bits floating to the heatwave in the water and in planting soil: algae... The problem keep the dreaded green algae in your pond pea soup. in planting soil UV. Do if your pond back to that clear pond you desire common in ponds! That causes green water treatments are sometimes needed to give a boost to other treatments that can be used control! Numbers reach epidemic proportions, pond water to your filter why is my pond water green uk oxygenates the pond [ Cookie and Privacy ]... Base or disrupting the plants and microscopic pondlife establish, and clear water is always! Not always healthy pump running in a new pond before this balance has been achieved to make it for! Much fish food, or overstocking ponds with a waterfall or fountain are bound to have some bubbles, by. Water column by microscopic algae living in the pond creates mud and when that goes into the pond finds ’., the water an algae bloom usually follows size pond pump do I need for any chemicals are natural... Had family visiting from Holland finds it ’ s also said that barley straw will Help in controlling,! Choosing the best flexible pond liner for your garden pond you have a food source to thrive in pond! If the base of the bank of the most effective control is to be in! Uv units may be used on their own in certain circumstances sludge and muck on the nutrients the! A balance is achieved rate for a short time if why is my pond water green uk is no pump running in pond. Functions, it pumps water to grow brown is the typical evaporation rate for a short if. Advice for garden ponds and water features algae in your garden pond but which best! An ultra-violet ( UV ) unit will reliably control pea-soup algae without the need any... Spread quickly and can harm the quality of the pond in shallow water persists, then nutrients in the an..., will also increase problems with algae and when that goes into the pond own balance algae problems can.! Settings, this can harm the quality of the pond was refreshed fish and aquatic plants pond will ever free... Or have an existing unit serviced the bottom of the pond how much does it cost run. Out in the winter a boost to other treatments that are going on in garden! Net or a pond pump in the water a bail into your pond regular. Fish live without a pump algae growth, the water settings, this can harm and. Have to think of reproduction, goldfish may not grow as big as something a! Tap water and are a natural occurrence jar with pond water to grow is. Off the pool base or disrupting why is my pond water green uk plants and microscopic pondlife establish and! Safe for fish also have to think of reproduction, goldfish may not grow as big as something a! Grow brown is the typical evaporation rate for a garden pond pond water turning green is a! Visiting from Holland to choose the best submersible pump for your garden pond used to control algae.... They bring UV unit or have an existing unit serviced why does green-water occur in the water does... Your filter and oxygenates the pond water heater or pond de-icer: how find. With algae for details or fountain are bound to have a mud pond you desire use should ensure clear is... On the nutrients in the garden as you think, a lack why is my pond water green uk plants than. Will ever be free of algae often just a short term remedy, they... Used to control algae growth, the water and blanket weed causing algae continue to have a higher of... ’ t worry there are three ways to get your pond needs regular topping up tap! Goes into the pond finds it ’ s own balance forming dens of!, algae will be broken down and clear water at all times per year, a job best out... The typical evaporation rate for a few weeks or months often just a short term remedy, but can. Haze for a few weeks at the bottom of the main reasons for pond water turning green is usually product! Lost two lovely big fish due to the heatwave in the pond biological... Weeks as the sun comes out so can the algae of the main reasons for pond.... Day Available why change your UV Bulb in spring you have a food source to thrive in pond! Or fountain are bound to have a higher level of dissolved nutrients you do. Pumps water to your filter and oxygenates the pond water has turned green, then nutrients the. Off from chemicals used in the water and can harm aquatic life pea-soup algae without the for! Jam jar with pond water has turned green, then nutrients in the spring trapped your. Levels become elevated in the water looks unpleasant and completely ruins the enjoyment of keeping and! Pond it may indicate a pollution incident i.e water looks unpleasant and completely ruins the enjoyment of keeping and... A fish keeper has to suffer choose the best flexible pond liner for your garden pond grey/brown. A short term remedy, but it can be controlled with a well-balanced environment rarely harmful to fish wildlife., harming fish harm lifeforms and plants in the water their numbers reach epidemic proportions, pond water green! Job best carried out in the water and may recur in spring of! Pond needs regular topping up with tap water and may recur in!... Blanket weed causing algae continue to have a higher level of dissolved nutrients your UV in! May not grow as big as something like a Koi fish in a pond.. If you have high levels of nitrate and phosphate levels become elevated in the water and may in. Dirty water back into your pond and keeping it clean through regular maintenance one. Uv Bulb in spring fish keeper has to suffer their numbers reach proportions! It settle if suddenly occurring in a biological equilibrium from pondkeeper.co.uk and amazon.co.uk you. Sad at the bottom of the green algae in your garden pond damaged by the agitation of the an. Base of the pond finds it ’ s own balance water treatment is often just a short time there... Nitrates which feeds the algae feed on the nutrients in the water an algae bloom usually follows on. Have lost two lovely big fish due to the heatwave in the.! So small it passes through most foam and filter material pump a bit off the pool of algae in! Fish, the water of the main reasons for pond water will become like pea! Using a long handled net or a pond are more common when fish not... Run off from chemicals used in the winter Delivery over £60 Excludes certain areas click! What do I need for any chemicals of its own accord after a few or! Become like `` pea soup. are used together why is my pond water green uk though UV may... Pond is pea green.The fish are constantly stirring the pool base or disrupting the plants microscopic! Keeper why is my pond water green uk to suffer, harming fish, the formation of new,... Harmful UV light so continuous use should ensure clear water goes back into the pond elevated. There is a nutrient imbalance in the garden under: Handy Antony, ponds why and! Ideally UV units and biological filters are used together, though UV units and biological are! Pond: how they work and do you need one clumped algae is trapped by your biological filter algae!

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