I have tied some java moss on a piece of drift wood recently, but I noticed that the 2 flying foxes in my tank are eating the leaves of java moss. This made the moss hard to grow and I have just made a moss wall and presuming the same thing will happen to it. Any idea to stop the fish from attacking the moss? I am trying to feed them more food in thinking of they won't eat the moss when full. Please advise on what to do in solving this problem. Thank you in advance.