I thought I'd ask all of you on this. I have a DE filter (Jandy DEV48). I have a brand new pool and the pool was just setup a week ago. The guy who set it up put in 5 lbs of DE. The manual also says to put in 5 lbs after backwashing.
My next door neighbor has the same filter and builder and the guys who close her pool (from the same builder) state that she is putting in too much DE....she was putting in 5 lbs. She puts in a coffee cans worth and my neighbor two doors down does the same.
How much DE are you all putting in out of curiousity??