I have an opportunity to purchase a brand new Fluval FX6 at cost. Currently I have a 90 gallon aquarium that is on the last stage of a fishless cycle and almost ready for fish. The filter that is on it currently is an Eheim Pro II. I plan to put African cichlids in this tank My question is would purchasing this Fluval FX6 be WAY overkill on filtration on this tank? I don't think you can over filter, but the FX6 says it can do 563 gallons per hour. I can also get one of any of the other Fluval canister filters at cost as well. Would I be better off going with a Fluval 406 instead?