[slief]

Originally Posted by farbs

Thankyou again!
I have turned it off for now and will try raising it 2 cm tomorrow and will let you know how it goes, if that doesn't help I might just have to go back to my old skimmer, which would be devastating as I have dreamt of owning Bubble king for years. Is it possible that the skimmer is just over sized for my tank and stock level.

While it might be on the large side, that wouldn’t explain the overflow. The overflowing is a sign of the skimmer not being tuned or setup properly. You just need to keep working with it to fine tune this thing for your setup. The lowered sump depth will help a lot.