We get the chlorine to the right balance, then within 3 days the level is back to near zero. We got a floating tablet in there now. run the pimp at 2k from 10-5 then 3400 with the vacuum from 7-9pm. stumped on whats going on. It doesnt seem normal to have to add this much chlorine. PH is usually good, and doesnt fluctuate quickly. Any help would be great, thank you.