Well you caught my curiosity.

This may be a stupid question. However I've understood Color temp (K rating), I read all about Lumens (peoples visible light), and I've read all about PAR (plants usable light). What I can't seem to figure out is Luxx. I assume it's a reading given by a light meter. However how well or how does that convert to PAR or Lumens? :wtf:

I'm thinking these could also be used for dark spots in a larger room or early Veg before moving under the "power house" HIDs.

Keep us posted, I'd like to see some plants in those boxes, preferably all clones of the same plant?
Vancefish Reviewed by Vancefish on . automotive HID lights vs. cfl's Hi, I'm starting this thread to compare a variety of lights for small closet grows. First i'm posting only light outputs of 250 watt 6400K vs. 250 watt 25000K vs. automotive HID lamps. I built three indenticle boxes 24' X 22" x 36". I'm measuring output at the bottom of the box. in the first photo the box on the bottom left is the 6400K 250 watt cfl, bottom right is the car HID and the top is the 250 watt 25000K. Average light output are as follows. 250/6400K 5000lux peak was 5410 lux, Rating: 5