I've been having a problem with cloudy water ever since I cleaned up an algae problem over a month ago. The algae appears to be gone, the water is blue, but I can't seem to get it clear. I have the TF-100 kit and my levels are: pH: 7.6, FC 10, CC 0, TA 150, CH 90, CYA 90. The only thing I can think of is our filters are bad (we have a Pentair cartidge system with 4 cartridges). I've tried rotating them with our spares but it doesn't make a difference. When I vacuum to filter, the water just seems to get cloudier. The pool is an inground kidney, vinyl liner, approx 30,000 gallons. Anyone have any idea besides buying new filters?