Let me start off by saying i have been using this site since last year and i greatly appreciate all the information compiled on this site.
So, 3 weeks ago i started the "how to turn your green swamp into a sparkling oasis process". last year i did it in the spring and it worked just as it should, it took about one week and my pool was crystal clear. This year however, the green water did turn greyish/milky color but it has been 3 weeks and hasnt cleared up at all. There have been a few changes that include: (1) just before the clean-up i installed a pool pilot saltwater system (still using bleach however, i know that the swg will not provide chlorine fast enough to shock the pool). (2) for the past two years my filter (sand) has run at 10 psi clean, this year after backwashing i can only get it to run at 19psi at the lowest and it seems to take a long time for the pressure to go up which seems unusual given that i am clearing up a cloudy dead algae ridden pool. I did not drain my pump and filter this winter as i live in an area with pretty mild winters and on the few nights that it does freeze i just run the pump to keep the water from freezing (the first time i noticed the higher pressure was after starting the pump during one of the cold spells).
So i guess my question is: Do you think my filter is not working properly and needs to be disassembled and looked at or is there another problem keeping my pool from clearing up? i did not want to start taking the filter apart without advice first and start loosing progress on what i have already done to clear up the pool.