Go ahead and try it without the Polyquat and just be diligent about keeping up with your chemistry. You can always go back to using it if you decide you need to. I never use any Polyquat, not even when closing my pool. I'm consistent about my chemistry and don't really need it. What I don't have to spend on that, I can use to buy something else like maybe dog food! My 3 golden retrievers go through LOTS of dog food!