Depends on your budget, I guess.
A small grain substrate would be best. I've seen beautiful lawns of HC kept in anything from 3M ColorQuartz to ADA AS, Fluorite, EC, etc...
Most of my experience is with ADA AS and I have to say it grows quickly in a high-light/tech tank w/ ADA AS.
A small grain substrate would be best. I've seen beautiful lawns of HC kept in anything from 3M ColorQuartz to ADA AS, Fluorite, EC, etc...
Most of my experience is with ADA AS and I have to say it grows quickly in a high-light/tech tank w/ ADA AS.