I forgot to ask, what are some thoughts on a tall background plant? I'm getting sick of seeing my wall/ filter piping. I use to have a wall of ludwigia repens in each tank. Pretty but what a pain in the BEHIND. It would grow past the spray bar and reduce flow, plus the leaves that fell off would be all over the tank! I think something Like a val would be great but I'd really like to get some suggestions! Thanks a bunch!