filtration in 9 gal sphere glass tank

[shrimpy1]

Hi All,

I bought a 16 inch diameter glass sphere with a 6 inch top which I am converting into a mini saltwater tank. I calculated that the sphere will hold about 8-9 gallons. Mostly, I intend to have a couple of small hardy fish (damsels, clowns or firefish-not sure yet), and a few cleaner shrimp.

My problem is filtration. I have been able to easily stick a small pump near the top of the tank. I figure I can wrap some floss around the opening to serve as mechanical filtration. However, I don't think this will be enough.

I really want to have a protein skimmer, but can't figure out how to connect one, given the top opening is small and round. Anyone have any ideas on how to fit a skimmer, or otherwise implement an alternate method of filtration?


TIA!

[Poseidon]

Sphere tanks are GREAT to look at, almost Impossible to keep. They don't have nearly enough surface area, and as you are finding out hard to filter. I would keep that one fresh water, and stick an UG filter in there, with an air pump to help keep oxygenation up.

[icemark]

I would probably run a protein skimmer in the dead center middle, from bottom to top, and cover the skimmer with either live rock, or custom made fake rock.

something like this: