I wouldn't mind some info on hairgrass particularly why I can't seem to keep it growing. I added some giant hairgrass for the background in my 55g and it kept getting shorter and shorter till all I have left is a few 2-3 inch pieces sticking up. Now I have some dwarf hairgrass I'm trying to grow in the foreground along with microswords. It's living but it's not spreading and it's barely 2inches tall. 55g tank, 160w florouscent lighting, ph 8.0, kh 15, gh 12. I'm working on softening my water and it's down from ph8.6, kh 20. Dose with flourish weekly, 1 capful flourish excel daily.