I have about 10" of water to go and the pool will be ready to turn on the pump. I did hang a chlor tab in a stocking in the middle of the pool conected to a milk jug hanging on a plastic wire across the pool. The hose tore and turned yellowish orange. Wow, that stuff is strong. I redid it with a stronger sock. My newest ? is how often do you have to add borax. I realize that bleach will be a regular routine, but is that the case with borax too. I've almost gone through 2 large boxes. How many boxes do most of you go through in, say a month? Thanks again for all the support and answers. Sharon