I have a SWG- usually run it for 12 hours at 55-60% and it maintains chlorine between 3-5
Lately I've been increasing it almost every day by 5%. UP to 85% now and still at 1-3 on chlorine.
It's been raining a lot lately- I get that there is no chlorine in rain and it will dilute the pool water, but this seems excessive...
My other guess is that I got the CYA up a little too high?