Ok, Wow thank you all so much for all of your help. But... What is Dichlor powder ?? This is my first time hearing of it, When I switched it was just loads and loads of liquid bleach And I'm sorry you lost me with all of your numbers. How do I figurure this all out on just how much to add, to test and where do I buy this powder? Again I thank you all so much for your time and patience with us. By the way We live in South Florida so the sun has been very hot.