Just an update! I can see down to 5'! no more mud. I could hardly see 3" down when all this started! I have backwashed the filter (DE) 6 times and vacuumed every AM and PM - last night removed the filter blades and vacuumed to backwash for 2 hours and lowered the water by a foot and refilled found out that I have two tare in the blades of the filter. I sewed them up and will have to buy replacements. It was a mess inside the filter tank clay cediments every where. I have gone through over 35 lbs of DE media. the water is cloudy but not brown just a little green. new tests: PH 7.4, FC 11, CC 0.5, CYA 20 I have a group of people coming for the 4th to swim but I am afraid that even though the water might clear the chlorine level will be still too high! thank for all the help
Regards

Amir