Put in 16k gallon pool with SWG three summers ago. Been fine until this year. Opened to lots of algae. Balanced and shocked the heck out of it. Thought I had it. Pool will NOT HOLD chlorine. After paying Leslie's $$$ every week, I'm done. I bought the kit everyone recommends and I can test myself. Here are my levels:
FC - nada. Nothing. Have added 12 pounds of Leslie's super shock in past three days.
PH - 7.6
Alk - 110
CYA - 40-50
Calcium - 410 (Leslie's made me keep adding)
Salt - 3100
Anyway, I've tried 10 gallons of liquid chlorine, shock, everything. Nothing holds. Recently I finally got yellow out from Leslie's hoping maybe algae was the issue. Pool looks better now,
But still won't hold chlorine.
I know this topic has been covered in detail, and I've tried to read as much as possible, but I can only father that maybe I need to raise my CYA a bit, and then just keep slamming until it holds it? Is that it?
TIA for any assistance!