CBollie, your Geophagus are AWESOME! I have a fondness for Eartheaters. I long while ago, my 150 gallon was a planted eartheater tank. I mostly had plants that would grow attached to driftwood (like you do). The species I kept was brand new to the hobby at the time and not even named, but is now called Gymnogeophagus meridionalis. http://www.diskusmann.de/bilder/buntbarsche/gymnogeophagus_meridionalis.jpgMy 100 gallon PLANTED Eartheater tank. Yep, Eartheaters and plants 5 Geophagus Altifrons
I kept them with another awesome species, the Altum Angel - I had 8 of those, 6 eartheaters, a bunch of Corys and several Pekoltia "plecostamus" species, and a Jaguar Cat (who lived to be 15 years old). I loved them, but I had to move the tank upstairs and converted it into a paludarium, so I have smaller species now (Corys, Cardinal Tetras, and Pencilfish).