ok i opened up my de filter and it was a nasty lime green color inside. I cleaned off all the tentacles and the inside of the filter and put the cover back on. Then i added about 5 lbs of de to the skimmer and let the filter run.

within an hour the pressure went up from 20psi to 30psi, so i bumped the handle and it came down to 20 again. Then another hour later the psi went back up to 30 and no amount of bumping will bring it down below 25.

Do I need to backwash and put more DE in? I mean I just added it a couple hours ago.