Hello all, I've been reading and printing from this site for a while and wanted to sign in and say thanks for all the information. My wife and I are new pool owners, $80 a month for a guy to put chlorine in the pool seemed crazy so we let him go and have been trying to let all this information sink in. He had all the readings way to high so I have been getting it all in the ball park, slowly. My wife is like you checking that again? More bleach? Is it safe to swim with that many chemicals? Thanks again for this great site, until my next question, be safe !