Last week when I tested the water it showed higher PH and so I added Muriatic acid. Added about half a gallon. It is a 20,000 gallon pool.
This week when I tested the water at local store they said I have high CYA. It is at 150 ppm. Is it real high? Watched some youtube videos and they say it should be around 30 and they recommend adding Bio Active.
Should I add Bio Active? Is it a problem having CYA that high?
Thanks a lot.