The "carpet" in Glossostigma. It grows very easily under high light and CO2. The substrate is Carbsea Eco-complete, 450 lbs. of it.
I do two 1/3 water changes weekly. One I just swap out water which takes an hour, the other I trim and vac and it takes 3 - 4 hours. Plant growth is doubled in a week on the stem plants. Luckily I have a LFS that loves my plants and gives me a great price for the clippings.
Just a note, I to admire Travis's tank, it's incredible what he has done with an African tank.
Thank you all for the comments, they are very appreciated,
Michael