I have recently purchased a bubble King mini 160 vs12. Put it in de sump, start it up and for some reason I can't get a proper skim from it. It feels like it's getting to much air or to less water. The skim won't go past halve the lower part, not even close to the collection cup. I'm having it in a red sea reefer 250, around 20cm(8") water height . Yet it won't skim. Did any of you have this problems in the start of the new skimmer?
Foto shows what I mean.
