my mother just bought the house across the street from me for a winter home. the pool is a swamp. we shocked the pool and it's blue but very cloudy. we bought a new cartridge filter and it started off at 9lbs. ran it for a few hours and it was up to 20lbs. we rinsed it and it started at 14lbs and ran it to 20 lbs, rinsed it again and it started at 19lbs.
we tried dish washer soap and it helped if you let it sit for a day. but the filter needs cleaning every few hours
but there's not much coming off the filter when we go to clean them.