What's wrong with my Java Fern?
I have a huge clump of Trident Java Fern growing on some drift wood that I've had for at least five years, and it's always done very well. Recently, it seems to have gotten some kind of disease where it's just started to turn black and die. I went through it about a week ago and pulled out any that had any signs of the disease and threw them out, but now it's already showed up again like gangbusters. It hasn't affected anything else in the tank, but I'm scared it will. All the other plants and fish in the tank are doing great. Does anyone have any idea what this is?