If you add algaecide, keep in mind that some algaecide contains copper, which can actually make a pool cloudy. If the cloudiness persists 24 hours after shocking, then it's possible that you used a poor-quality chlorine shock.
Common reasons why the pool is cloudy
1) Not using the right amount of algaecide – It might seem like just a little bit of algae that you're trying to kill, but you'll need enough algaecide to kill it all and not be left with dead algae clogging your pool's filter.
To treat pool water made cloudy by a lack of chlorine, simply keep adding chlorine to the water until the water maintains a chlorine residual of 2ppm or more. If you suspect that the cloudiness is caused by poor water balance, simply add a pH/alkalinity decreasing chemical until the water comes into balance.
The presence of too much algaecide can lead to a foamy pool water. Small bubbles will begin to be produced as the water is pushed through the return jet and back into the pool. Do not confuse these bubbles and foam with another common problem, which is air in your pool lines.
If you already have visible algae growth, you'll need to get rid of your algae problem before you treat your cloudy pool water. Unfortunately, algaecide won't solve the problem. It's better as a preventative measure, not a treatment. To remove algae, you'll need to skim, brush, and vacuum your pool.
Now is the time to add Pool Clarifier and let it circulate for 12 hours. This will clump the algae together into vaccumable pieces. Shut your pump off and let the cloudiness settle. This may take up to a few days for very cloudy pools.
There are a few different types of algaecides that contain various chemicals to suppress and fight off algae. Many of them include copper or copper sulfate. It's this copper that oxidizes in the water. And when copper oxidizes it turns a green color causing your pool to look green.
Algaecide should be added to your pool water on a weekly basis. Preventing algae is the key to fun in your pool. Algaecides act as a backup to your normal sanitization program and prevent algae from starting and growing in the pool. Algaecide should be added after every shock treatment.
You should wait at least 24 hours before shocking the pool after adding algaecide. After shocking, always check the free chlorine and total chlorine levels because they could increase very high if you do not wait long enough before shocking.
Cloudy water may still be safe to swim in, but if the chemicals are not balanced, then swimmers can experience red eyes, irritated skin, and rashes. If the cause is environmental factors, it can usually be cleared up with a clarifier and regular cleaning.
If you add an algaecide containing copper or use Trichlor pucks that have copper (some HTH Trichlor pucks have copper in them) then that can cause the water to become colored and can stain pool surfaces.
Pool water turns green because of algae in the water. Algae can grow rapidly, particularly when it's warm like Summer, which is why it can surprise you overnight. This generally comes down to an imbalance or lack of chlorine in the water.
Shock the pool with chlorine every day until all the green is gone (possibly 3 to 4 days). 2. Run the filter 24 hours a day and backwash every day until the green and then cloudiness is gone (usually up to 7 days, sometimes as long as 2 weeks depending on the filter). 3.
It is best to wait 30 minutes after adding it to your pool. We recommend waiting at least 15 minutes to swim after adding algaecide to your swimming pool. Most algaecides are perfectly safe to swim with. It is not recommended to swim with flocculent in your pool as it will reduce its effectiveness.
In addition to adding algaecide after shocking your pool, you should add algaecide to your pool water when closing down for the year. Dark, humid weather is a prime time for algae growth, and you do not want any surprises when opening it up again.
Add a dose of algaecide, bring your chlorine level high by shocking, and run the filter continuously until the problem clears. The next day you should vacuum up the dead algae and backwash your filter. Algae thrives in hot weather and in pools with low or no chlorine.
Cloudy or milky swimming pool water is caused by seven main issues: improper levels of chlorine, imbalanced pH and alkalinity, very high calcium hardness (CH) levels, faulty or clogged filter, early stages of algae, ammonia, and debris.
Rapid pH Change
It drastically raises the pH in the water around it, which leads to clouding. This explains why the cloudiness does not happen all at once, rather the process creates a cloudy plume that slowly expands across the pool.
Excessive levels of pool chemicals can cause your water to become cloudy. High pH, high alkalinity, high chlorine or other sanitisers, and high calcium hardness are all common culprits.
Adding a recommended dose of shock to your pool can clear it right up. Poor circulation or filtration can contribute to cloudy water. Make sure your pump and filter are working properly.
In most cases, a cloudy pool after shocking is only temporary and should clear up within 24 hours. Keep filtering your pool, add a little clarifier to help, and your pool should be clear in no time. If after 24 hours your pool is not clear, then you may need to look a little deeper for the solution.
While shocking and adding algaecide is effective in getting rid of algae, it should not be done together. This is because when you mix chlorine and algaecide together, it renders both of them useless. Hence, you should first shock the pool and wait for the chlorine levels to fall below 5 PPM.