7.5 FC (just added 96oz. to bring it to 10.5)
My pool has has had light green film on bottom for about two weeks. I think I let the FC go below 3 ppm for a couple of days and did not vacuum for 2 weeks. I brought the FC up to 10 as soon as I saw a light green area (two weeks ago) and ran my kreepy krawly. The water became cloudy. pH was at 8.0 to 8.2, I bought ph down from box store to get that back in order. I began running the vacuum 3 to 5 hours a day every day since last Thursday (6 hours on Saturday and Sunday). Raised FC to 10ppm on Friday and kept it there Saturday, it fell to 9.5 Saturday evening so I added the recommended amount on the pool calculator to bring it back to 10 ppm. I ran pump non-stop from Friday night to Sunday night. This afternoon (Monday) it was at 7.5 and a lot of green on the bottom. Kreepy Krawly began sticking to bottom today, I have never seen that, but it tends to miss some spots. It seems to be getting worse, not better. I'm at a loss as to what to do. Pool has been crystal clear since June by keeping ph, TA, FC and CYA at recommended levels. I'm thinking I need to get in daily and scrub bottom and sides.
A green cloud comes out of the return when pump is turned on. We have had a good amount of rain here in North Texas for a couple of weeks now. Does that contribute to the algae?
Any advice is much appreciated.