I think i might actually use akadama for the substrate, since i won't need much. Maybe it's time to go return the aquasoil... hm. I wonder. I really should have a look at the stones I have and see if they'll work out with this layout. might have to go buy some. argh.
And for plants, it seems like the hairgrass i have is kind of short and is set on staying that way. So my ordering list is growing. meh.