Right now, my pool looks great and the numbers are all fine. I'm working (slowly) on bringing my CYA down to a reasonable number. It's at 90 now. I am going to leave town for six days and have a neighbor college boy that is wanting to swim while I'm gone. He's not going to do any testing and I am thinking (sorry to all the purists) I can tell him that when he leaves each day (and he will come daily) to pour a 3 qt bottle of ultra bleach in the pool. Is there a better idea?