I am about to start a theme betta tank next week and need some help with the ground cover. The tank is going to be reminiscent of a meadow. Something like a cross between this: and this: I want the ground cover to look like grass, but not to be too long, as it needs to be proportional to the rest of the plants (cabomba caroliniana in the corners as "trees" and java fern in the middle of the back as "ferns"). I was going to use marimo moss (buy a couple of balls of it, then break them apart so that they'll lay on the substrate, weighted down by granite "boulders," which would be proportionately sized rocks), but someone on another forum said marimo moss doesn't do well like that (although I saw where someone did it in a smaller tank and it looked like it was successful). So, my other choices are micro sword and dwarf hairgrass. I have micro sword in my 55gal and I'm not a huge fan. I can't get it to grow for me at all (it doesn't die and it appears to be healthy and dark green, but it won't grow). I will have to look to see if dwarf hairgrass is available in my area (I haven't seen it before, but I've never actually looked for it, so it's possible I've missed it at Petsmart or Petco). My concern about the micro sword and dwarf hairgrass are that they grow to be 4" tall and I don't think that would look proportionate to the other plants...but I could be wrong. I can't have anything that I have to order since I don't have a checking account and don't have anyone's that I can use (my parents are terrified of ordering stuff online). So, would the moss work, or should I try to find the dwarf hairgrass or micro sword? The tank is basically the AquaTech version of the Eclipse 6, so it has an 8W T5 bulb in it.