True, it wouldn't be a good tank for fish. And plus, 5 gallons is a bit small for fish. I will probably try a 5 gallon with MH sometime down the road though, I'll let yall know how it works.
Oh and for that 2.5 gallon, it is on another site, its nano specific (hint hint) and the user name of the guy is Liquid. There is a big thread about the tank and the last few pages of it have the MH pics.