Follow Dave's advice and post some good test numbers. Chances are, part of your cloudiness is dead algae that your filter will get, if you have some patience. However, if you can't hold a chlorine residual that tells me that you still have something eating away at it, which could also be causing your cloudiness problems. I would be hesitant to add anything to your pool except chlorine until we have good test numbers to use to advise you.

Janet