The stem plant in the back is limnophila aromatica. One it converts to submerged leaves, they will be red and needle like. Pretty excited to see how this develops.
The rocks on the wood are just holding it down. I may leave the one on the right. Not sure yet.
Any thoughts?
Just as a hint as to wood that just does not want to sink... Drill some holes and fill with non toxic plant weights. Just saves future work as you can just leave in the weights forever. 
