How to fix too much algaecide in the pool?

In this short article, we will provide an answer to the question, “How to fix too much algaecide in the pool?”. We will discuss different ways to help you fix too much algaecide in a pool and ways to prevent algaecide foam. 

How to fix too much algaecide in the pool?

If you see some green, brown or yellow slime infesting your pool water, do not fret, it is often a sign of too much algaecide in the pool, Sometimes the amount required is mistaken and added, which can be counteracted by following the approaches we have mentioned here in this article. 

  • Watch for the signs
  • Let the chemical naturally dissipate over time
  • Drain some of the water

Different ways to counteract too much algaecide in the pool

It is a frequently made mistake to put too much algaecide in the pool which can result in water that is filled with little foaming bubbles which can destroy the filtration system. An excess amount of algaecide can also result in eye and skin irritation. 

It is advised to stay out of the water and not allow susceptible users to swim in the water unless the problem is solved and the algaecide concentration has reached safer levels. 

Although adding too many algaecides is a common and natural reaction to the growth of algae in the pool, this error can be avoided. Algaecide is not to be used for routine processing and is in fact, not the most useful or most effective means to get rid of an algal bloom.

Adding too much algaecide in the pool saturates the water, making it less useful on the whole. This problem can be solved by using the following approaches:

Remove the algaecide by letting the chemical evaporate naturally over time

Wait for the concentration of algaecide to decrease by evaporation, splash-out and backwash.

The most effortless way to solve the problem is by keeping up with daily chlorine treatments and letting the algaecide naturally dissipate through the pool filtration system. Be cautious that if the condition has created extreme numbers of small bubbles, this may impair the filtration system.

You must be wondering how long it will take for algaecide to evaporate. Letting the algaecide naturally evaporate usually takes around two to three days but could also take over one week.

For many pool proprietors, this is not a satisfactory solution, primarily because this problem tends to happen during the peak pool-use period. To speed up this process, you should normally use a web to remove as much quantity of foam that may be floating on the surface of the pool.

Keep an eye on the symptoms

If you see foaming or cloudiness on the water surface, or sense eye and skin irritability, it symbolizes the possibility of too much algaecide in the pool. Review the product label to determine the proper dose that matches your pool’s capacity if you are not certain how much to add.

Drain some of the water

On the contrary, if the skin and eye irritation are severe, or you do not want to wait for the algaecide to evaporate on its own, you can opt to drain part of the water and then refill the pool with fresh water, attaining a larger dilution of the chemical. You can then start over with shock treatments and pH balancing. 

This is a more labor-intensive remedy but it will correct the problem by opening the pool for swimming much more speedily than waiting much longer for evaporation.

How to remove algaecide foam?

The algaecide foam should dissipate after a few days as soon as the algaecide levels decline. If you are having mates over for swimming and you want the foam to disappear quickly, then you can apply an anti-foam agent, for instance, Pool and Spa Antifoam Defoamer Concentrate.

How to prevent algaecide foam?

One of the best techniques of assuring you do not have to deal with algaecide foam is to only use algaecide when you see algae in the pool. Many people add algaecide regularly, thinking that this way it will prevent algae from developing. 

This may be valid, but if the algaecide has nothing to act on it will only accumulate in the pool developing foam.

One more way to prevent algaecide foam is to apply a non-copper algaecide, for instance, In The Swimming Pool Algaecide 560 Plus, which does not form foam.


In this short article, we have provided an answer to the question, “How to fix too much algaecide in the pool?”. We have also discussed different ways to help you fix too much algaecide in a pool and ways to prevent algaecide foam. 


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.