Sorry but I meant that I'm not using salt.

Thanks for the feedback and I'll go ahead and buy the Taylor test kit. In the meantime what can I do to rid the white film just above the water line around the pool wall area of the fiberglass pool or leave it up to the pool company to try to get rid it? It doesn't come off when you run your hand across it. The pool doesn't have tile on the top inside area where the white film is located.