Rain And It’s Effect On Pool Water

It’s a pretty common occurrence that after a big rain storm, a lot of customers come in complaining of green pools. I will try to explain, as best I can, what rain does to your pool water and how to treat your pool to prevent it from going green from a heavy rain storm. 

 When it rains a lot, it brings in a lot of contaminants into your pool. It brings in pollen and other organic debris from many valleys over and your chlorine is often used up getting rid of these contaminants. Therefore your pool has used up its sanitizer and there is nothing there to prevent algae from gaining a foot hold in your pool.

 Rain is  very acidic and chlorine is also very acidic. If PH is not regularly adjusted and your pool drifts on the acidic side it burns off your chlorine in a much faster rate then it normally would.

 

So, sometimes it’s a combination of things that will lead to your green pool after a rain storm. The simplest and best recommendation is to maintain your PH in a regular fashion and when a big rain comes, shock your pool. Shocking your pool, in most cases should keep your pool clean and clear. The dosage for shocking your pool is 1 gallon of shock per 10,000 gallons of water. I often hear customers that have a 25,000 gallon pool, explain that they’ve shocked their pool with a gallon and it didn’t help. It’s not enough. If your are having problems, at least put the recommended dosage. Sometimes, you’ll even need to double it or triple it depending on the severity of your issue.