Laura wrote:We have had a problem with phosphates in our pool since June. There was yellow and green alge in the pool at that time. We treated it as per our local pool place's specifications and the alge did clear up, but since then we have had off the chart readings on phosphates. We have tried numerous processes suggested by the pool place, including having them send out one of there service people to check out the pool. We do have a Clormatic salt generating system. It obiviously has not been able to work since the phosphate count is so high. What do you suggest we do to try and get the phosphates under control. (We have cleaned our DE filter three times: July 4th , August and Oct.)
A dedicated phosphate remover is required to get the pool under control. Regardless of what the users are saying, if your phosphates are not under 100ppm, you will have issues affected by then. If the users avoid the issues regardless of their phosphate issues > 100ppm, they are sinking more money into their pool than necessary. A phosphate remover only costs 17.99 per qt here, which is far cheaper than the chemicals you invest in the long run should you neglect it. If you do not use the phosphate remover and apply what chemicals are necessary to balance the pool, I highly doubt you will see appropriate corresponding readings. Phosphates will primarily mess with your chlorine levels because they act as food for algae (causing you to burn through chlorine extremely quickly) however you may see other imbalances resulting from phosphates as well.
As far as phosphates are concerned, when you opened the pool, did you have alot of debris in it? Do you use a phosphate free detergent? Have you or your neighbors fertilized recently? These are all potential causes of phosphates entering your pool.