well in contrast, i used NPK in the 8-8-7 forumulation to get some really dark green moss growth coming out of some semi-dead brown moss sitting in stagnant water in a container.
I reckon if you used this formulation, or something similar long with currrent to increase the update of the ferts, along with high light, i growth would be more profound than what i had.
Otherwise, i just dose pps pro in my community tank with moss cramed in places to get some really dense growth in a matter of weeks. no co2 involved, though i would imagine that would help as well.
"I am Groot", the faithful protector