I just received a Java Fern that I ordered. It looks good but I noticed some of the leaves were brown. I picked off the ones I could but left some of them because they were only half brown. The half brown ones had what looks like baby ferns growing out of the leaf. The part that is brown is above the point where the babies are growing out of. Is that normal? I attached it to a piece of drift wood and it is now in my tank. If it is not normal, is there anything I can to to help the plant? Thanks.