At my local Petsmart they have a 37 gallon tank with Eclipse 3 hood for $199, all nice and boxed up. This would be a bad deal, right? Unless of course a 37 gallon tank costs $100. Are there any advantages to having a 37 gallon tank besides if I want to keep angelfish? The surface area is the same so if I don't keep angels I would probably be better off getting a 29 gallon then or even a 20 gallon long depending on the fish, right?