Prawn Connery
Well-Known Member
I measured about 950 PPFD at 18" for both of them when I first set them up. The High Lights are limited by the 320 driver to around 345W at the boards. The QB324s matched them at around 400W at the boards. So both are getting similar PPFD coverage.
The QBs have the advantage of an extra reflective wall, as it was noted that this helped improve coverage on that side. Also, it's a single-plant grow for each station, so this removes some of the advantage the High Lights have in terms of wider spread, as the QBs have a lot of light concentrated in the middle, which works better for one-light, one-plant grows.
So it's a pretty fair side-by-side comparison. Or about as fair as I can make it.
The QBs have the advantage of an extra reflective wall, as it was noted that this helped improve coverage on that side. Also, it's a single-plant grow for each station, so this removes some of the advantage the High Lights have in terms of wider spread, as the QBs have a lot of light concentrated in the middle, which works better for one-light, one-plant grows.
So it's a pretty fair side-by-side comparison. Or about as fair as I can make it.