Since taking over the pool after it was built this past spring, the 19,300 gallon pool goes through CYA. I get it up to 50 or even 80 and it is back to <20 within a month. Each time it requires a SLAM which normally takes 3-5 days. What in the world is causing this CYA loss? Plus, now that I am covering it at night with a solar blanket for the past month here in southern FL, I am dealing with cloudy water more so have to SLAM even more frequently. It definitely cleans up to not losing anything over night. Where and why am I losing CYA?