hi im getting a 6'x30"x30" 235 uk gallon tank and wanted a mixed central and south american tank but wasnt sure on the stocking im hoping i can get some sugestions i also have another tank with a 2-3" jack dempsey 1 pair of cons 1-2" and two uraus 4-5" they could go into the new tank or stay where they are any sugestions and advice would be greatly appreciated