Why is my skimmer going nuts?

[jason604]

Ok so I went n bought a vertex omega 150 skimmer put it in 7.5" of water and it's doing the exact same thing as my previous skimmer!!! Either overflowing, come back couple hours n bubbles drop all the way down.. Vice versa. Are the skimmers acting like this because I have no bio load other than super clean rocks and new live sand? My tank is ready for the move but I'm afraid to swap everything from my old tank over till my skimmer problem is fixed. Was thinking about going to buy some fish n try it since I cannot catch any fish in my old tank CUZ they keep hiding in my sps corals