First, I did try to do a search for this since I know it has been covered but either my search terms brought up nothing or it brought up half the forum posts.
Noob pool this summer and the install overall went well. I have a DE filter that fortunately I have not had to backwash in a while, so I forgot how much DE I put in last time. I couldn't find my manual so I looked at the bag of Celtom DE EP-100 10 lb bag that I am using and it says that for my Hayward 4820 with 48 sq ft that I should use 20 lbs or 10 cofee cans of DE. My bag of EP-300 which I assume is no different but has 25lbs says to use 10 quarts. My Hayward 4820 manual says to use 6 lbs.
So what am I supposed to use?
Is there a difference between DE brands and choices?
When I put in 10 1lb scoops today I knew it was too much since it started really getting into the pool. I didn't see the 6lbs recommendation on my manual until later.
So it obviously looks like 10 scoops is too much. But was I not putting in enough with 6 lbs?
With the overfill of DE, my water is not overly cloudy. I can see a couple of areas where some DE has settled.
What should I do?
a) just leave things go until next time need a backwash?
b) run my pool cleaner to sweep up the DE on the bottom?
c) run pool cleaner and then do a backwash today?
EDIT: My psi after doing this is right at about 10psi which is what it usually is after a backwash (and I change when it gets to just under 20)
"too much DE" (putting this here to help future searchers)
Also, how important is it to mix DE in a slurry? I have had two PB just say to dump it right into my skimmer return without mixing then start my filter.