I cant figure this out. After backwashing my DE-4800 filter several times, my system starts at 12-15psi with great flow for a couple hours. then creeps back up to 25 or higher and eventually flow slows to a crawls. I then tried manually cleaning the fliters and starting the system again. Same thing, started at 12 psi with GREAT flow for 2 hours. I let it run over night.. and after 6 hours psi jumped back up to 25 psi and flow has slowed again.
I notice when I look inside the pump skimmer when I start it with great flow the pump is full of water.. but as the but after a few hours it look like it get about half full.. I am beyond frustrated..
Before I go and buy a new filter grid to see if that help, I thought I would see if anyone has any suggestions. Thanks!