Thank you Janet! I have been reading tons of stuff and I think I've got the idea. Just realy have no faith in the kits that I am using because I'm not really sure how old they are. I have been using a Taylor K-2006 and a K-2005 but some of the tests just don't seem to work right. Do you know which of the reagents would lose there punch after sitting around for awhile? They were stored in a garage here in Florida for idk how long. Think for now I am just gonna go to the store tomorrow and have them test some water and give me the numbers. I might try to drain the pool and refill a little bit at a time to lower the CYA levels. I realize this won't be as effective as one quick half a drain but I don't wan the Gf's parents to think I'm crazy for draining the pool the first week on the job, haha! All they know is the pool looks clean now so why would I be draining it.