tenndoc, what is your current CYA level? A FC of 11 is not high enough for algae killing--it will need to go higher, but earlier in this thread I saw that you had added some CYA and your current level will tell you how much chlorine you need. Also keep in mind that the algae, live and dead, in the water is what makes it cloudy. You need to have your filter running 24/7 and backwash it when the pressure rises 6-8 psi over the "clean" pressure. Do you notice a rise in your pressure gauge?