Well I started off with a green pool. It is now in swimming condition. However, the FC levels will drop 4-5 ppm per day. I don't think its sunlight doing the damage because my CYA is fairly high. Any suggestions?
FC 1.5 (but I just added more)
TC 1.5
PH 7.8
TA 140
CH 270
CYA 60
Also, I have...