What size tank would be good enough to keep a single leichardti in? Its still very small under a foot. I have a 250 gallon, 8L 2.5 H 1.5Wide, but im not sure if 1.5 is wide enough to keep a leichardti in? Should i shoot for something 2' wide and maybe only 7 long or 6 long? Also 400$ for a 240 gallon acrylic 8L 2H 2W is a good deal right?