I have a 55g and a 10g, both with the original light hoods that came with them when purchased. I would like to try growing some java moss (is this possible with these crummy lights?) but I have absolutely no vision, and don't have a clue where it is supposed to be planted. The substrate is pool filter sand, and I have resin rocks and real driftwood in both. Is the moss supposed to look like a carpet over all, or like clumps growing out of the sand or what?