Last Updated on February 28, 2021 by Cooper Fulton

How To Remove Pond AlgaeHow To Remove Algae From A Pond

Ponds are a beautiful addition in your backyard or garden.However, remember that all good things come at a price.

To prevent algae from growing in a pond you need to: add aquatic plants, limit sunlight, dye your pond, add filtration system, and prevent overfeeding.

Ponds are not that demanding if you set up proper systems so you won’t have to pay so much attention to it every day.

Algae growth in your pond can turn into a madhouse of mosquitos and insects to destroy the whole image of your pond.

This can ultimately lead to the death of your fishes at the pond, as fishes are grown much better in a clean and stable environment.


How To Prevent Algae Growth In A Pond

Here’s how to avoid algae growth in a pond. There are 2 styles of common algae, suspended algae and string algae. 

However does one recognize that algae you have got in your pond? Take a transparent glass, lift out a number of your pool water and hold the glass against a white background.

If the water itself is inexperienced, you have got suspended algae; if the water is evident, you don’t, however, you will have string algae.

String algae generally grow on rocks around the perimeter of the pool, and in-stream beds and waterfalls that are sometimes areas of hyper-oxygenation.

String algae, as its name implies, may be spooled around your fingers and tugged off rocks to a degree.

Eliminating the last part of this plant may be difficult; however, it may be removed with Aquascape’s EcoBlast Granular or liquid pool and rubbish Clarifier.

These work by binding up the obtainable Calcium within the pool that the algae must maintain its link with the rock.

Before we proceed to the steps of cleaning algae from the pond, it’s better to discuss some easy points to prevent algae from growing at your pond.


Do Not Overfeed Fish

How To Avoid Algae Growth From Pond

One good and protective step are not to overfeed your fishes as overfeeding will result in the leftover food at the bottom which will be the reason for algae growth at the pond.

Just know that how much food your fishes need at a time and feed them the right amount which they will consume in a roundabout five minutes so that there would be no extra food to spoil your pond.

I’ve gone into much greater detail about overfeeding in this article.


Plant Aquatic Plants

How To Avoid Algae Growth From Pond

Planting lily pads is the best idea to avoid algae growth at your pond.

Algae draw necessary nutrients from water to grow, these plants will absorb those nutrients from water leaving water inappropriate for algae to find its food and grow.

Moreover, water lilies will turn your pond into a beautiful sight. It is recommended to cover up to sixty percent surface area of your pond with aquatic plants.

There are other plants like watercress and cattails which can be as useful as lily pads.

You can also grow a mixture of these kinds of plants.


Limit Sunlight Exposure

Water Lettuce

Sunlight is the necessary part of algae growth so if you haven’t built your pond yet, consider building it in a place that receives afternoon shade.

If you already have a pond then use a shade matt or plants to give shade to your pond.

The best plants I have found are floating plants such as water lettuce, or broad leafed plants such as water lilies or elephant ears.

Shade coming from big trees and plants is not suitable for your pond as plants will shed leaves into the pond which will ultimately rot into the pond hence giving rise to algae growth.


Build A Border Around Your Pond

A one or two-inch rim or border around your pond will prevent your pond from getting any runoff of near by soil or nutrient rich water. 

The water or soil coming into the pond will bring along the nutrients that boost the growth rate of algae. If you can cut out one of algaes food sources you are one step closer to preventing any algae growth.


Dye The Water Of The Pond

Using pond dye colosr the surface of the water, this will help the water absorb less sunlight and will hinder the growth of algae in the pond.

I’ve tried this, and it works like a charm! This simple trick will help prevent any algae from growing without changing much of your pond. 

Although this is just a precautionary measure, which will save your time and energy while cleaning algae from the pond, if you have got the algae then there is no other way except for removing it using various methods.


How To Remove Existing Algae From A Pond

Sometimes you catch algae growing before you had anytime to prevent it, to maybe you tries to prevent algae growth but somehow it still managed to grow.

After being in the pond industry for as log as I have, no matter what I have done, algae still manages to grow.

A few things I do to remove existing algae are:  add a skimmer, add barley straw, add algae-eating fish,add an aerator, clean my filters, and use a UV filter.


Remove algae with a net or skimmer

This is the one easiest and effective way of removing algae from the pond.

Simply by using a pond skimmer or an algae net will get rid of the algae and regulate its growth to normal.

The process will take a while but it will give you good results.


Add Barley Straw

How To Remove Algae From A Pond

Barley straws emit hydrogen peroxide which slowly kills algae in the pond.

You may use eight ounces of barley straw for every thousand gallons of water.

Just throw the barley straw into the water and you will notice that the algae will start to disappear in a short time and slowly your pond will be algae-free.

Barley straws are also easily available at pet stores because they are used for bedding of small animals.

Check out this post to get more information about barley straws.


Keep Algae Eating Creatures At Your Pond

How To Remove Algae From A Pond How to care for pond minnows

Tadpoles, minnows, or goldfish can be the good algae remover because these feed on algae.

If you are already having them at your pond then you may not be worried sick with the algae in your pond water but if your pond is empty or only grown fishes then algae can be a threat to your pond.

Introduce algae eaters in the pond. This will also increase the movement of the water as the water gets more vulnerable to algae growth.


Install An Aerator Pond Aerator

A pond aerator will not only add oxygen to your water, but it will also also movement. The movement in the water will make it harder for algae to grow.  

Having extra oxygen is always an added benefit to any pond. It will give your plants and fish extra oxygen that may have been taken form algae. 

Aerators also add a great touch to any pond. Smalls bubbles at the surface will make any pond look much better than having standing water.

My favorite aerator is the Crystalclear PondAir 2. It is very reliable and provides a lot oxygen.


Clear The Water Filtration System

If your lake incorporates a filtration system put in however algae remain able to grow, you will get to clean the filter within the system additional typically.

Follow the manufacturer’s directions to scrub your filter a minimum of once monthly to stop algae from forming.

A lake filter isn’t necessary, however, it may be helpful to keep the water in your lake clean. If you’ve got an outsized mechanical filter, you must be able to clean it by attaching a backwash hose and backwashing the filter till the water runs clear.

For smaller filters, take away the filter and clean it with non-chlorinated water to get rid of any obvious grime, gunk, or algae.

Make sure you clean out your lake filter off from the lake. If you clean it too shut the lake, everything you take away from the filter can find yourself back in your lake over time.


Use An Ultraviolet Light Sterilizer

Using Ultraviolet Light Sterilizer:

Ultraviolet light is able to kill any algae that flows in front of it. By adding in a UV light filter, the population of algae in your pond will drastically decrease. 

UV lights are not always the cheapest option, but they do work extremely well. The average UV light filter comes in at $75-$150.

The use of ultraviolet light is one quick and easy way of cleaning your pond.

So, how does an Ultraviolet Light Sterilizer Work?

Pond water is passed through an ultraviolet lamp.

This process kills algae, germs, and molds and sterilizes the water. The process takes a short time because of the high flow speed of the water.

It is an idea to remove floating algae. Then the clean water is passed through the lamp again and in this second phase, it replaces the right and beneficial bacteria that were killed in the process with new bacteria.


Treating The Pond With Algaecides

Algaecide and herbicide treatment is the very last step that you should go for if any of the other treatments do not work.

It contains special algae and herb killing chemicals that are dangerous to be used.

It is effective in killing algae, the very first treatment will give you effective results but follow the strict instructions while using it.


Algae Removing Aids

Apart from the above-mentioned precautions and methods which you will need to perform, there are some devices and solutions which will save your effort and would let you have clean pond water.

Some examples of these are, Algae Fix a liquid that you add into the pond and it does the right job for you.

Danner Pond Master Pond Fix; clears the water from algae by minimizing the nutrients in the water which serves as food for algae and restores balance to the pond system by enhancing the filtration system, also it comes along with the performance guarantee three years.

The cleaners can be very good solutions at a time but you need to be careful with the selection because not all algae removers will be suitable for your pond. You should know the needs of your pond and keep your pond life out of danger while clearing out algae.



All the solutions for the removal of algae are temporary. They do not provide you with permanent algae relief because they do not eliminate the cause of algae growth.

Removing the root cause is the only permanent solution and that is only possible through ultimate care when you remove all the algae growth supporting substances.

UV filters can be helpful in keeping your pond algae-free if these are applied constantly in the pond.

UV is not itself a filter but it is an addition in the existing filters of the pond. Doing this will show anybody that you know how to remove algae from a pond.

It’s up to you to use any method of clearing your pond of algae but you cannot leave it on its own if you do not want to see it turning into a smelly corner full of mosquitos and germs.                                    

Take care of your pond on a regular basis and choose the right place and structure for your pond along with the good aquatic plants.

Moreover, keep in mind once you feel lost within the ‘wild west’ of this ugly green management – you are doing have many weapons at hand.

Natural preventative measures like Barley Straw Extract, Aquatic Plants and helpful bacterium ought to keep algae trapped.

Aquascape’s chemical treatments like EcoBlast Granular, SAB Stream Cleaner, pool Clarifier, Sludge & Filter Cleaner and fast clear to scrub up those dangerous blooms, and therefore the IonGen G2 gets to eliminate the string algae for good!

No need to panic with the growth of algae at the pond. Help is always within your reach. Protective measures work best when they are used as early as possible.