I have this java fern in a 30g tank that I got a few weeks ago and I was wondering if it is doing well or not because I saw that some of the leaves are turning brown and it started sprouting roots out of some of the leaves.
the leaves are turning brown because these are the reproductive spores. In java ferns, the plantlets grow off the leaves. I also highly recommend tieing the java fern to some drift wood or rocks. You could also super glue it which is aquarium safe.