Quote Originally Posted by kecsmom View Post
the readings at the pool store today were: FC 3.9; TC 4.4;CC 0.4;ph 7.9
You won't get anywhere letting your chlorine get that low or relying on the pool store for testing. The water will have to be tested several times a day, with chlorine added as required. You also need to push your pH down with muriatic acid.