Just been told that I will have to change my pool water due to high nitrate levels.
I have an in ground pool, about 40,000 gallons. With a D.E filter. Right now I cannot maintain any sort of of chlorine level, and the Ph is about 7.2 . The water is clear and blue. All the other chemicial levels are within range. I have an in-line chlorinator which I am filling up and leaving on full! In addition, I am putting 3 to 4 lb of powded Cl in every other day. I live in NJ and close it down for the winter, dropping the water level down way below the water return . I don't really want have to pay out for 'clean'water and new chemicials, is there anything I can do?