Good lookin start on your tanks supaoopa...
Check your Java Ferns and be sure that the rhyzome is not buried at all in the substrate, the hair roots in the substrate are fine but not the rhyzomes, they wont die but the growth slows down immensely.
A great way to anchor the ferns for a low planting like that is to get some small pieces of lava rock (or large pieces and a hammer
) and just tie it with on with thread and drop them in the tank. Its also nice to be able to remove the plant for trimming time or to give it a root trim without makin a mess.