Why is my skimmer going nuts?

[The Guy]

Originally Posted by jason604

K u guys r awesome! Moved it up so skimmer is about 8" in water n it now works perfectly!! Barely any noise with egg crates plus it's in my fish room so can't hear in living room. But I will still put some pond liner on it TMR so it's fully silent.

I have a Vertex Omega150 and have it sitting on 6 stacked egg crate pieces, kinda the same as what you have there. It's in 8" of water and works great, I ran it in vinegar mix when new for 24 hours to remove any oils etc. before I put it into operation in the sump.