Oh yeah, I almost forgot to divulge the findings on the foil duct tape experiment: As expected it was a waste of time. Once the heat got ahold of the adhesive, and my superstrong plants got to pushing on the tape, they popped right up. Lesson learned. For this particular brand and model of foil duct tape, it doesn't work real well to hold branches down if 600 watts of HPS is near by. Sorry, not digging it out at this time to tell you what kind it is, but I know there is foil duct tape that is about twice as expensive, and it's rated for hot situations. I'll bet this might work, and why didn't I buy a bunch of that instead of the cheap stuff?