Quote Originally Posted by mukherjeeprem View Post
question 1) can the pressure be too high when there is not enough DE?

question 2) when I put more DE in, won't the pressure increase? Basically there was not nearly enough DE and the pressure was already too high so adding double or triple the DE would make it worse wouldn't it?

I read this thread: http://www.poolforum.com/pf2/showthr...ng-a-DE-filter
which said that the filter should run 8-20 psi. my filter started around 15 and then was up to 30 within a day.
Do I add MORE DE in now?

When the pressure was running way too high, I bumped it, backwashed it and then did NOT add more DE in and now the pressure is normal but according to everything I'm reading, I probably only have about 1/5 of the proper DE in there now. Am I damaging the filter?
1. Yes. Pressure can rise due to any type of blockage on the filter ie hair, dirt, leaves etc, but your pool is new so I doubt that is the case..

2. Well it depends on how much "more" you add, but yes too much DE will cause an increase in pressure.

Am I damaging the filter?
Probably not but you should make sure it isn't caked with a film of debris.

I have a DE filter that is 36 SF and takes 4.5 lbs of DE. I weighted it out the other day using a food scale. The pressure was 10 psi which is normal for my pool. After some vacuuming, it rose to 15 so I backwashed and reloaded it. It is now at 12 psi.

HTH