Ah a surface skimmer that attaches to the fluval? That may be it... maybe you can adjust it down a bit? How does it work anyway? I was looking at them for my fluvals
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.