Operating pressure


Well-known member
Jun 24, 2007
Eastern NC
How important is it to backwash a DE system when it reaches the 10psi point from initial setup? How much farther past the 10psi can it go safely? Reason I'm asking is I'm at 8psi above now and was wondering if I need to backwash tonight or could it wait until I get home from work tomorrow. DE system is new to me.

Oh and is making a DE slurry necessary or can it just be added straight to the skimmer basket? My neighbor just adds to the skimmer but I want to make sure I do this right and not go on what someone else is doing that might be wrong.



LifeTime Supporter
Apr 22, 2007
It will be just fine for you to wait.

I always just added it to the skimmer. Not all at once. 1 or 2 lbs at a time with the pump running, it always slurried right up by itself, for me.