I have been out of town most of the summer with someone taking care of the pool, etc. When I returned last week, the pool was green. I raised FC to 17 and kept it there for 3 days. Got rid of the green, but the pool is still not clear. Yesterday evening I raised FC to 31 (the mustard algae level). This morning pool is still not clear and FC is down to 15. Do I need to raise back to 31 and keep it there til the water clears, or what?
35,000 irregularly shaped plaster pool, sand filter, 1 hp pump, Maytronics Premier robot.