I'm attributing the successful HC growth to the dirt AND the paperclips. And adequate light. And good water and probably luck. Anywho, LyzzaRyzz and marioman72, you've talked me into trying CO2. Didn't need too big of a shove, really.
I've found a few different recipes for CO2 concoctions littered across the intraweb... Any recommendations or words of wisdom before I get to it?