The ball is Hydrocotyle Verticillata attached to a piece of closed cell foam. It just grows and provides some shade to the ferns and anubias.
There is also a piece of manzanita wood floating above the ferns and anubias with willow moss on it.
The tank has now been taken apart, and kept almost bare, as I am preparing for holidays.
The plants were given away, kept the fern and anubias, and some pieces of Liliaopsis and staurogyne on wood.
See pics:
Staurogyne on wood. Also has Lileaopsis and Marsilea H.
Mixed moss mat with Staurogyne.
The tank is ready for a month of no EI, no WC and just 40W of light. Only neons and cory's kept on the tank.
The Java Fern was prunned, the Anubias tucked under it, the moss mats were secured on the gravel, Rotatala Rotundifolia trimmed to just 10cm, L Aromatica was kept.