Ok, so I opened my pool up in West Virginia, we have had a few hot days and my water temp is in the 50's. I have had the filter running for a week and although the water was dirty it was pea soup. So I take the cover off last night and her is green pea soup water and my temp is 55 degrees.
So I tested the water a few times before last night and had 3-4 ppm FC and the cya was 45. Where did I go wrong. SHould i had started testing water in the winter? I know the routine about keeping the fc at shock level checking twice daily but I didnt expect green water. Any one else have a similar experience? I'm glad it's still cold here at night and is going to dip into the 30's this week. Any ideas how to prevent this next year?