Join Date: Aug 2011
Location: Gainesville, FL
For what it's worth, I had a small (softball) sized clump of java moss in one of my tanks lit with a halogen floor lamp. It grew to a monstrous size, staying very thick and bushy, without any fertilizers, CO2, or inhabitants for that matter. It is positioned near the top of the tank and receives a lot of light + flow.
I never liked java moss because it always looked ratty to me, but I'm going to be hard pressed to get rid of this clump.