Hah, yeah, I've been contending with the HC, trying to gradually get it back down. The yellow patches in the pic are from some recent aggressive trimming. The HC was really slow in filling in, but once it did, it really took off!
For CO2 I'm using a pressurized setup I got off craigslist going into a cheap diffuser. My HC pearls okay, so it can't be all bad. It would be nice to have something in-line eventually, along with a heater, at least so I can get some of this clutter out of my tank.
Right now I'm just dosing with SeaChem stuff at water changes, but I'd like to switch over to dry ferts once they run out / I have the energy. I think that's something I don't really know enough about yet, to be honest.