Skimnmer keeps overflowing

[FreakingReefing]

Hey,
I have a coralife 220 skimmer on my 75g tank in the sump. I turned it on about 4-5 days ago and its in about 9" of water also bought it used. Ever since I turned it on it has been filling up with bubbles and overflowing out of the top daily. I have been cleaning it out everyday since I was just wondering why it was doing this cause it seems to be a problem, I can really only raise it about another 1/2" and then it will be touching the top of the stand. (poor sump planning on my part) But what else could be causing this or is it just the water depth. If so I will probably have to look into buying a sump that will work better in deep water.

Any opinions or further info I can give please respond I really wanna figure this out asap
Thanks for your responses

 

[biecacka]

What pump are you feeding it with? Could be too strong. Can you adjust the water level in the skimmer? Maybe turn it down a little bit
Corey

 

[sasharotty]

I think the ss's cone with their own pump. Is it new? Could just be breaking in. Turn the red knob all the way down for a few days. I had one for about a month and removed it cause it always dumped water back into the sump. They are very finniky ime. Any change in water chemistry and the thing would go nuts.