Ajroy-- I also feel that the left side has some weakness to it, probably because I was originally planning for a one-sided layout, not two, and I bought the pieces of wood with that in mind. Actually the pieces on the far right were bought on a different occasion than the ones middle/left, and I think you can tell they look to be slightly different types of wood.
All the wood was bought at Aquaforest in Tokyo (not affiliated with California apparently), but while the pieces on the right were bought last summer, the others were bought during a more recent trip this last January, so I didn't have the older pieces to compare when I bought the newer ones.
That said, I think with a bit of water log, you can't tell all that well, and hopefully I can get these all to visually balance. I am hoping that as the rotala grows in the two sides will feel like they come together better.
Quetzal--no, just a plain sand-cover.

there will be some Christmas moss growing out over the sand though I hope.