ok cool, =but I'm burning through 2 gallons of 10% liquid bleach every night @ this pace!! Pool always tests @ around 0-1ppm the next day.....could just warm water eat up CL? we swam yesterday , but the majority of the days are covered w/ a Coverstar top. I forget what is average during hot days for CL consumption, but I don't remember it going this fast! thanks, hope the CYA police show up soon!