Answer:

Could be a number of different reasons. Here are a few of the most typical. If the pH is not in the acceptable range of 7.2 to 7.8, you can expect cloudy water. Also, High calcium hardness levels or high total dissolved solids can cause cloudy water. This may be due to keeping your pool water for several seasons without partially draining and refilling with fresh water. And a lack of sufficient free chlorine can also be cause for cloudy water.