Hey y'all, I've been reading and trying to get a grasp of things. The TF-100 kit came in Saturday. I've never tested before, just threw two jugs of chlorine in during the middle of winter and a few tablets in the chlorinator, several months back. I need to scrub, vacume and clean the cartridge today. I have read that I need to let the cleaned cartridge run for about an hour before testing. In the mean time is there a good rule of thumb as to the amount of bleach and such to have on hand prior to testing? There are two jugs of chlorine left over from the past owner, about half a jug of muratic acid and half a container of tablets. Just trying to figure out a quantity to have on hand and I guess a good starting point. I'll post my test results as soon as they are accomplished this evening. Thanks for any help or assitance that can be lended. Awesome site by the way!