I made a forest using anacharis in my sunken forest theme tank for the same reason -to give the fish something interesting to swim around and through, My ember tetra spend all day in there. If you want a look at it, it is in the TOTM thread.They seem to like to be able to kind of play through the "forest" as well. I'm hoping as the barbs settle in though they will move up a bit in the tank, right now they are sitting on the bottom with the corys.