Wow, how are you going to squeeze the sofa into the tank?
Seriously, what suggestions do you want? Plant selection or rock arrangment? Is that how you're thinking to arrange the rocks at the moment? How big will the tank be? Long or tall? Etc? Maybe a picture with the rocks in the tank to give us and idea of the scale.
From this picture, I think the grouping can be tighter... move the rocks closer together but in the same ratio of distances. Might not suit the tank length though.
Bookmarks