Hey foo lee,
glad you could make it to this forum!
You pointed to a real nice site. Another good one for fish and plants is http://www.petfrd.com
I always find the cooler the better. My xmas moss looks funky when it's warm but real nice when it's cool. I've had terrible luck with java until I turned down the temp of the tank. This expands to not just mosses but monoselenium (pellia) too. I have not yet found a moss particular about nutrients, etc.
Erect, I found, though, grows more erect under high light. Maybe the light stimulates it