No extra setup involved for growing java moss. It's a low-medium light plant that seems to do fine in very low lighting. Mine grows like crazy because of my CF lighting, 65W, and I usually have to clear my tank out every 6-8 months because there's almost no space for the fish to swim, lol. I would just attach it to whatever you want it to grow on with black thread, and within a few weeks, it will attach itself to the object. And if you hide the thread well enough, you won't have to remove it, and it will grow so thick it will cover up the thread. The thread won't hurt the tank either, I still have it on my driftwood, and it's been in the tank for over 5 years. And it hasn't deteriorated at all either. When you attach it, attach it really thin. Don't tie it in thick clumps, as the JM on the bottom will die off and you'll have a mess. Spread it out nice and evenly, then tie it to secure it, then place in the tank.