I came here from what now seems to be a defunct forum. I started taking care of my pool myself a couple of months ago after getting tired of dealing with pool chemical companies. Never realized how easy it is. I bought a drop test kit by HTH, and it serves fairly well. I will be getting the Taylor 2006 soon. I was able to get one TH test out of the HTH kit and the hardness indicator seems to have gone bad. The test water turns yellow instead of blue. I guess that's what you get at wallyworld. Anyway, I hope to continue my education here.