So I have a 6ft rack with 40b and my original plan was to have another 40b community, but an add on craigslist for a 3' by 2' tank made me think otherwise. I wasn't gonna have any SD's in the 40b, I was gonna have Buenos Aires Tetras instead. So i was wondering would a 3' by 2' be enough for some SD's, specifically Metynnis lippincottianus, maybe fasciatus or even maybe a Dawkinsia species.
