Thanks so much Vickery and Kellyfair. My water has warmed up with this heat and the water has been in the 80's this week so it is now plenty warm. I have been testing daily with the powder, strips and the blue box kit and all are getting the same results. That is the first time I have been told to only glance very quickly at the CYA test so I will try that, sounds like very good advice. I went in swimming for the first time yesterday and today I woke up with my ear canal very swollen, some sort of swimmers ear I think. I am wondering if that could be from the iron in the water causing some kind of bacteria? It seems like with the high chlorine level that I should not be getting an ear infection? Thanks again for the advice.