I was under the impression that Java Fern took in nutrients from the bog wood it is attached to through the roots.
Try raising the Fern closer to the surface - A large tall section of bog wood with ferns just below the surface on it do very well in my tank (high light though). They do appreciate co2 blown onto their leaves.
Try raising the Fern closer to the surface - A large tall section of bog wood with ferns just below the surface on it do very well in my tank (high light though). They do appreciate co2 blown onto their leaves.
