Cloudy Swimming Pool Cleaning Tips

A cloudy swimming pool isn’t really an inviting sight regardless of how hot the weather condition may be. A cloudy pool water is basically caused by filtration problems, algae, low chlorine levels, high total alkalinity, incorrect pH, high conditioner levels or calcium. In addition to that, a cloudy water is sometimes red, green or milky white. 

Cloudy or Milky Water 

There are a lot of possible causes of a cloudy or milky water. You may use a pool test to diagnose the following: 

  1. The chlorine effectivity is reduced since the cyanuric acid is accumulated in the water. The cyanuric acid dilutes the chorine effectivity to fight off bacteria. You should drain the current pool water and then, add new water. This will reduce the levels of cyanuric acid, and at the same time, super chlorinate the pool to the recommended levels or to 10 ppm.
  2. Accumulation of pollution and dirt because of low levels of chlorine. Reverse the filter flow as well as send the water out the waste lines. This is also known as backwashing your filter. Then, super chlorinate the pool water by adding either calcium hypochlorite or hypochlorite in order to increase the levels of chlorine.
  3. Fine hard salt substances are usually suspended within the pool water forming a cloudy, milky white appearance. As a matter of fact, this is because of the high total alkalinity or high pH levels or both, lower the alkalinity or pH levels with the use of a dry acid. In order to fix this problem, add some dry acid to a 1 kilogram per 100-meter rate per day until the readings are already correct.

The filter is blocked or clogged, check for debris or dirt build-up and change the filter if needed. If you’re not sure how to replace a filter, refer to the pool manufacturer. 

Cloudy, Green Water 

This may be caused by algae formation. Shock-dose with chlorine using algaecide, sodium hypochlorite or calcium hypochlorite. For tented green water, you may super chlorinate your pool water to 10ppm. However, if the pool water is pea soup, adjust super chlorination to 25 ppm. Furthermore, brush off algae accumulation along your pool surfaces and then, backwash the clarifier. 

Rusty Red Water 

This is due to corroded pipes and ferrous metal fittings in your pool circulatory system. Chlorine actually oxidizes with metal forming rust. If this happens, contact the pool dealership immediately to see if it’s still safe to drain your pool water. You’ll have to take out all the rust from your pool with a good liner and tile cleaner. Change the metal parts with copper or PVC tubing. 

Prevention is certainly the best course of action in dealing with your pool water. The maintenance equipment and surfaces of the pool should be cleaned at least once per week. Add oxidizing chemicals to your skimmer once in 30 days to clean out your filter lines. You should also test the pool water on a daily basis. Contact a pool cleaning San Antonio professional for more details.