Dwest 0 Posted March 29 Report Share Posted March 29 While trying to balance the chemicals in our pool after it was shut down due an equipment failure the water turned cloudy and light blue. We ran the filter overnight and the filters were clogged with a cyan blue slime. The pool was clear before the incident. Ph was low, below 6.8. Free chlorine was not registering but total chlorine was high. I added Ph up using the recommended dosing. Later the same morning, we added a small dose of shock and that seemed to initiate the problem. Any ideas what happened? Quote Link to post Share on other sites
RDspaguy 932 Posted March 30 Report Share Posted March 30 Uhhh, @waterbear... Quote Link to post Share on other sites
waterbear 181 Posted March 30 Report Share Posted March 30 pH was below 6.8 but you don't know just HOW low. My guess is that your water was VERY acidic You don't give any test results so I really can't comment but I have seen this before when the pH was dangerously low. I noticed the endcaps of your filter are blue. Are they by any chance gummy feeling or slimy feeling? I have seen very low pH 'dissolve' filter endcaps and other parts and I suspect that is what happened. It often occurs when someone puts trichlor tabs, which are extremely acidic, in the skimmer basket, or even more dangerous, into the pump strainer basket. However, without knowing the actual water parameter when it happened it's impossible to really know what happened in your pool but it sure seems like very low pH caused something blue to dissolve. Quote Link to post Share on other sites
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