I'm in Los Angeles, so lots of sun/heat. I have a 1000 gallon in ground spa that pours into a 120 gallon basin. There is a cover on the spa but not on the basin so, from 9-3 everyday the pump runs and so does the waterfall.
I followed the sanitation directions and currently CYA is approx 30. Everything else is balanced.
How much chlorine should I expect to lose each day, and when should I worry I'm losing too much?