esworp - how's yours coming along? Love that you have co2 in it! what's the "grass" that you have in it? Is it filling in nicely?!
It is micro chain sword, according to the little tab that I threw away a million years ago. :] It propagates really well in straight lines, so it will cover ground fast but thin - once the runners start criss-crossing each other, you get a good lawn.
Honestly, I'm struggling with green spot algae. I had to travel for a week: turned my co2 down and made for a shorter light interval - but still have a dusting of green. :/