Java fern was the first plant I ever owned. It didn't grow very well, basically, it grew fast enough to replace the leaves that were dieing and/or being cut off because of the bba that seemed to flourish on them. Finally, when I added some fast growing stems, CO2 and better lighting (this was on my 10g, towards the last few months that it was really an active tank), it took off. Now in my 33g, it's one of my favourite plants and grows very well for me.
I think that part of growing this plant is just giving it some time to settle in and having some other plants around to absorb excess nutrients, since it's not particularly fast growing.
I think that part of growing this plant is just giving it some time to settle in and having some other plants around to absorb excess nutrients, since it's not particularly fast growing.