Do you think the hair grass will grow in a Low Tech tank with 1.6wpg and without CO2? I've been looking for a grass-like carpet like this. Looks great though!
When you say 1.6 wpg can you be a little more specific as to what type of lighting you have (T5, T8, etc..), tank size/gallons and how far you have the light from the substrate.
I have grown it in low light with no CO2, it just grows very slow and takes some time to fill in.
The key is to separate it into small strands of around 10 blades each and plant them .5-1" away from each other. I also trimmed about an inch off the top and clipped the roots a little bit to promote new growth.
Where on earth did you get that piece of driftwood for your second tank. Very nice, I live in your neck of the woods so if there's a store about that sells pieces like that I might stop by.
I got it from Tom Barr (plant brain) who is a member of this forum and lives in CA. He usually has a thread where he sells all kinds of this driftwood. I private messaged him and told him what size tank I had and what I was trying to do and he sent me some.