We have an above ground pool. It is a 30,000 gallon pool. We have a sand filter. We went on vacation in mid July and returned to a normal pool. Within a week, it started to turn green and within 24 hours of noticing the green tint, it was green and cloudy. We had the water tested and shocked the pool and treated for an algae problem. We now have a blue pool that is completely cloudy. I don't have the exact numbers for all tests, but was planning on taking a water sample to the pool store at the end of the week. We added a bottle of Superfloc to the pool last night, ran the pump for 2 hours on recirculate, then turned it off. This morning, I got up to a clearer pool. I could almost see the bottom. I vacuumed and now it's cloudier than before. Any advice?