Simon, your assumption was right.

The reason I have them both in the same pot is that I only have one Compact Floro in a heat lamp fixture (doesn't put out any heat after I changed the bulb btw) right now, I need to get another one, or just a regular grow light to seperate them. If I cant get one within the next week, I'll just split the pot down the middle with a peice of plastic, thus creating in essence two pots out of one, but in the same space.