I was wondering if anyone could identify what my java fern is deficient of. I'm dosing tropica specialised nutrition 2 pumps per day and my tank is a 10 gallon, I have co2 and its about 1 bubble every 2 seconds, I'm using a JC&P full spectrum aquarium light at 50% for 8 hours a day. Also all my other plants are doing great and there's visibly no algae. The new growth from the java fern is healthy its mostly the old stuff that's turning brown. (sorry if the photos are not the best quality)