Chromophore, I had to stop for a minute & think about the size of your trees! OMB & I are growing little guys, SOG. We try to finish around 2' tall. The underlighting hits the sides of the bottom half of our plants, getting light to the lower buds. But you're kinda right about the undersides of leaves, but the photo cells still respond somewhat to the smaller amount of light they get from underneath, but we're mainly concerned with lighting the lower smaller buds to beef them up. This wouldn't help you at all. Your jungle is too tall for underlighting to reach them unless you used pole lamps!!!! I'm still playing the cartoon in my mind where you get lost in 'the jungle'! LOL!
catbuds Reviewed by catbuds on . Will 150w HPS outperform 372w of T5HO? Well, I'm going to Find out! Only really applies to me and my particular grow, but a worthy effort anyway. A couple day's ago I put two under the T5's, and two under the HPS. I think the HPS at 150w is about 18,000 Lumen?...and the T5's are pushing 35,000 Lumen. I will throw a couple pics up when the "wakeup" tonight, should be interesting anyway. Predictions? Rating: 5