Ok, I am thinking of getting a 10 gallon hex off of ebay, but am not sure what I would be able to put in it? I need stocking suggestions. I would be getting it for my mom so she would want something colorful. I have 3, 10 gallon tanks already and know that they are better, but she really likes the looks of the hexagonal ones, b/c they don't take up as much room. I just want to make sure that I can put fish in it that she likes before buying it. The dimensions are 14" tall with hood, each side of the hexagon is 6.5" wide, and across the top the total width from corner to corner is 13".