Today, I got my tape measure back from my room mate. From front to back, the plants are 4', 3.5', 4.5'. I could definitely tell a difference in the size of the buds since yesterday. I don't know if it was just one of those days where that happens or if the CO2 thing is actually helping. I just looked back at the pictures from two weeks ago, and the difference blew my mind. This is the first grow that I've documented, so I've never been able to compare anything like that before. I just hope that the final two to three weeks coming up are as productive as the last two were. Flushing starts tomorrow. I'm just going to give them ph'ed water and molasses. I'm going to change things so that the air conditioner runs all day long as well. That should considerably drop their "night" temperature. I'm hoping that they'll turn cool colors. A guy on breedbay that documented a grow of this strain really well dropped the temperatures into the 50's during the last three weeks and got a lot of reds and purples.