Posted: Fri Feb 04, 2011 12:07 am Re: Filtration
That's a 180 gallon tank. For turtles I think you will find a large canister filter like the Fluval FX5 better than a sump. Turtles are very messy and a large canister filter offers a large amount of mechanical filtration and biological filtration.
Also, if you do a sump with an overflow, you won't capture much of the debris as turtle waste, food particles, etc generally sinks to the bottom. Surface skimming with an overflow unfortunately doesn't buy you much in the freshwater turtle world.
Find me on the reef forums and I'd tell you just the opposite for a reef setup.