I'm brand new to this site and to pool ownership. I'm just now trying to figure out how to open my pool for the summer. I ran the filter for a while and the pressure jumped from 10psi to about 20 after a few minutes, which isn't surprising since the pool was super dirty and green.
My problem is that I have a DE filter, but there's no multiport valve. It has a backwash hose but I don't see how I can backwash it without moving plumbing around, which doesn't sound very convenient. Perhaps I'm just missing something, but it appears that the pump output goes straight to the filter, with the backwash hose connected to the input port via a T joint. Here are some photos which may make it more clear:
From what I've read, this is not a normal setup. Does anyone have any suggestions?