IDK i might do a pair of Comps or Geos. Maybe a single red devil.Havent really decided yet, i got the tank tonight and it was missing about a 3.5" piece of the plastic frame guy from LFS said put JB plastic weld and it will be just fine so imma let the JB weld dry overnight and fill the tank, petsmart was out of Penguins and AC110s and emperor filters so im going to put a 5g bucket ontop the tank with a bunch of filter fiber/floss in it and hook up a 200gph powerhead i have... look wierd but it should get the job done