Euro Reef Help

[no_bs]

Water height is constant. Skimmer sits in 6.5". Output is 1/2" above water. The only thing new is the sump. Mine broke monday night. So got it replaced by tuesday night. Skimmer worked great till Wed. afternoon, then overflow she goes. Hopefully it is just the new tank, and the work done. It just doesn't explain why it would overflow all of a sudden.