Quick update,
Lost power for five days due to a nasty storm that knocked a lot of trees down. The tank was down for two full days before I got a generator on it.
The check valve must of got stuck and the sump back filled and I had a bunch of water on brand new carpet.
Things got better. We wet vac'd the carpet. Fixed the tank to where it wont overfill the sump if the check valve doesnt work.
Surprisingly none of the fish died, the corals look to be healthy still. I'm glad the tank is big with a small amount of fish.