DE out the jets...

[Muggi]

Thanks, I broke it apart and figured out THAT problem - didn't have the manifold seated correctly. My problem NOW is I'm getting 30psi off the filter :/ Backwashed several times, water coming off is clear, but the pressure only stays low (at low pressure the pool jets blow nicely, high pressure they're barely a dribble) for about 30mins, then right back up to 30.

[PoolDoc]

I'm not sure I understand:

My problem NOW is I'm getting 30psi off the filter

You mean, you're seeing a reading of 30 psi ON the filter pressure gauge?

Backwashed several times, water coming off is clear

Coming OFF where? Out of the backwash? Back into the pool?

, but the pressure only stays low

Pressure, or flow? Pressure is what you read on the gauge; flow is what you feel at the pool return. Are you saying that when the gauge reads high (30 psi) the flow is low, or high?

(at low pressure the pool jets blow nicely, high pressure they're barely a dribble) for about 30mins, then right back up to 30.

If you are saying this:
1. Before backwashing the GAUGE pressure is HIGH (30 psi), but the flow into the pool is LOW.
2. Immediately after backwashing, the GAUGE pressure is LOW (10 psi?), but the flow into the pool is HIGH.
3. 30 minutes after backwashing, the GAUGE pressure is again HIGH (30 psi), and the flow into the pool is LOW.

Then, that is entirely normal with a DE filter and a pool that is (a) extremely dirty or (b) has live algae.

If (a) is the case, you just have to keep cleaning.
If (b) is the case, put the filter on recirculate till the algae is dead.

By the way, if you haven't OPENED the filter and manually washed it out, you need to do so. Most DE filters can only be backwashed a few times before they have to be washed down. Download the manual, first and read it.