I've been slamming for the last 4 days (also cleaned the filter which was filthy). Water is clear. Combined chlorine is .5 or or below. But over night loss is still at 4.5. What am I doing wrong?
CYA is 40
PH 7.4
TA 70
Thanks!
CYA is 40
PH 7.4
TA 70
Thanks!