I'm wondering if there is any issue with swimming in pool without the filter and pump running? I am installing a solar heater and got the piping all cut etc and changed my mind on the check valve. I won't be able to get the new check valve until Monday. The pool is currently clear and chlorine levels are where they are supposed to be. If kids are swimming this weekend, is that okay? My thinking is it should be okay but I want to be sure.