New user, took over pool maintenance when COVID-19 came and pool guy quit. Have read ABC's and understand SLAM process but I must be missing something...My yellow algae keeps coming back.
Big problem was CYA. Started at 110 and after much work I've gotten it to 70 so I've put in gallons and gallons of Liquid 11% Chlorine but unless I add Calcium Hypochlorite the yellow algae just hangs around...keeps coming back after a couple of days.
Two days ago I used 4 lbs of Calc Hypo (while CYA 100) and after I got algae death I vacuumed to waste, backwashed twice and refilled my pool 7 hours with garden hose. Yesterday clear water, CYA 70, pH 7.2 and a half gallon of Liquid Chlorine.
Today CYA 70, pH 7.2 TA 100, FC 39ppm and algae is back. I added another two gallons of Chlorine.
Chlorine/CYA says 70CYA is 28ppm SLAM and 40.5 for yellow mustard SLAM. What am I missing?
Big problem was CYA. Started at 110 and after much work I've gotten it to 70 so I've put in gallons and gallons of Liquid 11% Chlorine but unless I add Calcium Hypochlorite the yellow algae just hangs around...keeps coming back after a couple of days.
Two days ago I used 4 lbs of Calc Hypo (while CYA 100) and after I got algae death I vacuumed to waste, backwashed twice and refilled my pool 7 hours with garden hose. Yesterday clear water, CYA 70, pH 7.2 and a half gallon of Liquid Chlorine.
Today CYA 70, pH 7.2 TA 100, FC 39ppm and algae is back. I added another two gallons of Chlorine.
Chlorine/CYA says 70CYA is 28ppm SLAM and 40.5 for yellow mustard SLAM. What am I missing?