I have a small clump of Java moss on a piece of driftwood. The only problem is that after 6 months, I do not see any noticeable change in the amount of Java moss. In fact, every time I do tank maintenance, it seems like I am losing more moss (not counting the little pieces that fly off in a while). My moss is bright and green (with the bright green tips) yet I do not see any growth. I was wondering if it maybe has to do with my tank. I've heard all the stories about how Java moss can be a prolific grower if unattended, but I have yet to see this. Tank is 20 gallon long with 2.4 wpg. Dose Flourish Excel, flourish, and trace. Tank has MTS, Crypt Wendii, and Straight Vals. The Java moss lives, and is healthy. It just doesn't GROW!