Well, I actually pulled the hairgrass a couple weeks ago and planted glosso instead. The hairgrass takes over everything eventually - it even sent runners underneath the stones into the background, and it was a pain to trim it since it gets so tall. Sure, it looks good right after a trim, but it's not worth the hassle unless you're doing an iwagumi with only hairgrass, and very tall stones that won't get buried.
Here are new pics. I also replaced the T5HO light with a pair of Innovative Marine 8 watt LEDs. The glosso was just planted a couple weeks ago so now we wait for it to carpet...
