I have to close my in ground pool but would like to know if the pool needs to be cleaned of all algea before I cover it .. my cover needs to be replaced so it doesn't stop all sunlight so algae grows at the beginning of the season anyway
what is the temperature I have to close by before problems occur?
Is it cheaper to clear up algae in a pool with a bunch of D.E. recharges or a shock of liquid chlorine?
Its going to be about 44 degrees at night in about 2 days here