Would any know have some advice with running a Eheim Canister on an old dutch tank (72 Gallons) for Saltwater? I can't run a sump on this tank and figured that the new canisters would be easy to maintain. I keep getting mixed answers. Some have stated that the canisters dont provide enough oxygen and that it can not replace a protein skimmer. I want to have gobies, bennies, and live rock, mushrooms, etc in the tank but don't know if the canister would be able to handle the load. Also the lighting - I can only get 2 T5's in there - One 48 and one 36. Does anyone see a problem with coral as long as its nnot brain coral or something that needs a lot of wattage. Any help would be great!! Thanks everyone