Guess what! UPGRADE TIME

[kien]

Originally Posted by mrhasan

Had a check valve but forgot to place it

Have you installed the check valve? If not, then are you planning to? Looking at your sump there doesn't look like a lot of room for back flow in the event of a power failure? Hard to see in the pic to determine for sure though. Did you design the sump with room for back flow in the event of a power failure or were you going to rely entirely on the check valve?