We really need to see some actual water testing results to be able to better advise you. (NOT teststrips, though.) Make sure your CYA level is one of the levels you report. It may be the you are just not killing the algae although, it may be that plus a combination of your filter not working properly. Post some numbers and we'll go from there. Also, please put your pool's information in our pool chart.

Pool Chart Entry Form

Welcome to the Pool Forum!