i recently acquired a 20 gallon tank that is pretty high and wide. im wanting to place a 1.2 (1 male, 2 females) group in there. ive read up on a lot about them and since i live in arizona i doubt ill need a heat lamp. and some sites say there should be water dishes and others say you don't need them theyll just like it off the sides. is there anymore specifics i should know about them from owners with past experience?