Thank You so much!! I really needed to hear something positive. I don't think that my gauge is reading right on my filter, when off it is 30-35, on 50-55, backwashing 40-45. Last year it was about 15 when on & 30 when needed to be backwashed. I have been backwashing atleast twice a day & pump is running 24/7. Will buying Ben's kit keep me from having to take my water to get it tested? The nearest pool store is about 20 miles from here, & closes at 5:30 everyday. I don't get off work until 5 so it is hard for me to get there in time. Plus, the last time that I took off early & drove all that way, they just tested it with the strips, because I watched them do it. They tested it with 2 different kinds because I was wanting it tested for metal. I will get some "real" numbers on here as soon as possible.