im in the process of turning my swamp into an oasis lol! im at the point now where my water is a bright cloudy blue. at first i was having to backwash every two hours. now nothing is left but the tiny clear particles clouding up my water. the past couple days my pressure has been rising very very slowly. like 2 psi a day. i decided to backwash anyways and the water was still disgusting. my question is are these particles slipping through the sand filter? (thats why the psi isnt rising) and should i still be waiting for my psi to rise 10 before i backwash even though the water is nasty after a 2 psi change? Also im gonna buy some DE (pool grade) tomorrow and add a little to the sand filter. maybe that will clear up my problem!!