I let my pool turned to swamp over the south alabama winter. Started up 2 weeks ago and it goes from black to a light green cloudy water the first week and no changes the second week. It's been at shock level for 2 weeks with the pump running 24/7 with daily backwash and brushing. Most of the debris are out I assumed for I can only see about 3 ft. Could my 10 yr old sand be the problem?
25k IG Vinyl
CYA - 30
FC - 17
CC - .5
PH - 7.4
TA - 90
25k IG Vinyl
CYA - 30
FC - 17
CC - .5
PH - 7.4
TA - 90