That tank looks great! The only thing is that the piece of wood on the far right kind of throws me off..
I didn't even realise but now that you say it, it is a bit out of place on these pictures.
It looks better placed when viewed from a different angle, a bit higher up, but I wil try to rearrange the wood to make it look more suited.
My original plan was to have branches sticking out to the left and right but since I couldn't find suitable branches I used bog/drift wood pieces.