I have already posted about this, but cannot find it in the forum. A moderator answered and said to check my sand level. I changed my sand yesterday, and it has been running about 13 hours with no visible change.

My pool has been cloudy for 3 weeks. Ever since I opened it. I have a 5 year old AG 30 ft (20,000 gal) pool with a 1.5 hp Hayward pump. I have a 250 lb 18 in. Sand filter. I have been using the BBB method for 2 years. This year I cannot get the cloudiness to go away. I have been trying to keep the chlorine level at 15 ppm for the last 4 days to kill algae. Here are my numbers, they have been running pretty consistent for the past week or 2.

As of this morning:

FC 10 (just added 7 ppm this morning to boost)
CC 0.5
TA 150
Ph 7.4
Calc hardness 70
CYA 55