Why is my skimmer going nuts?

[The Guy]

Originally Posted by 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

Just to get it straight are you using this skimmer in the same sump that's going to be used for the new tank or what? Also is this vertex a new or used one? If new I would vinegar bath it for 24 hours to help with break in.
Sounds to me like you have nothing to skim yet, I never ran a skimmer for at least a couple of weeks after I set up my 90 g and moved all my livestock from my 50 g tank into the 90 and let the load build. Not sure there's a magic set waiting time before you fire up the skimmer, but it worked for me.
Maybe others can chime in.