Eraserhead
Well-Known Member
I'd leave the 160's on full power for all of flowering. The white power stays the same regardless of the red being on or not.
Thanks for all the info as always, I'm in a 5x7ft area so with the way my lights are arranged i believe 16 to 18" should be ideal, also considering my thread marked your 420th post i'll take that as a sign I'll crush it my next run starting from beans currently so it will be a bit before they make back under the leds for flower, maybe about two weeks before I at least finish the veg stage with them.I think your second run will be better, as they'll be start to finish. Just be careful of the heights. Too much and you'll stunt the plants and not get the optimal coverage to penetration ratio, or too far away, and the plants will not develop as much as their potential allows, and also penetration suffers too.
Grow area size has a lot to do with where the light should be placed. The lenses are wide enough for good coverage. In a 2x2 tent, we got well over 1200 Umol'/s at 12", and 800 Umol'/s, which is the target, came in at 20". In a 2x3 tent, we got 1156 Umol'/s @ 12", and 800 Umol'/s came in at 18". In a 3x3 tent, we got 975 Umol'/s @ 12", and 800 Umol'/s came in at 14". if you were to use a 3x3 tent, we suggest to use a screen and keep your plants pretty short. The bigger your grow area per light, you're trading penetration for coverage. A 2x3 area gives you the best balance between coverage (25w per square foot) and up to 36" of penetration.
Also, in a 6x6 tent using 6 units, with all the lights overlapping, you can achieve 800 Umol'/s @ 16.5".
Edit: This is my 420th post. Mark it down in your history books fellas.