hi, im wondering whats the best substrate to use for dats??? sand, gravel..... roughly how many i can keep together in my tank 4x2x2??? - i know size is a factor, so lets say they are 4" in size.... and what about decor, do i need plenty of bogwood and rocks for hiding, do i leave the tank mostly bare or do i go say 50/50 - hinding places and open space for swimming???
cheers
cheers