I just did my first backwash a few days ago and I noticed DE in the edges around the pool. I have read it is normal will show up in the pool but how much is considered ok? I added 8lbs to a Hayward DE7200. I noticed quite a bit in the edges and in the divots but if I was to guess i would say 1/4-1/2 lbs total but hard to say as our Dolphin robot got some in its cartridge as well.
I did not tear it down, just did a backwash and recharge.