Quote Originally Posted by ledtime
Weezard,

I was just reading one of your posts from page 7 of this thread. Your light puts out 90k on the lux meter? That's AMAZING. The ufo only put out 7,500? That's concerning. How can I expect this 120W light that I bought to perform well at all???
Relax, brah that reading is not impressive when you hold the sensor a few centimeters from the emitter.
At normal growing heights, I run 12K to 75K
91k. lux is just where photosynthesis halts.
That's why you can stop the stretch with a procyon.
What you are actually doing is stopping growth with light saturation.
Changing the R:B without saturation of either color is what give real control of the internode distance
Works well with little girls, not so well with big mommas.
Large plants only stop growing at the top.
Ongoing bottom growth will shove the tops right up agaist the light and then they bleach and will burn with the big emitters.
I built my light with too much red at max so that I could tweak the R:B by turning just the red down.
Look how fast light drops with distance from the source;
[attachment=o219059]

[attachment=o219060]
If your guy isn't just making up specs, your light will be more than adequate and, perhaps, stellar.

"Patient tends to ramble"
Weeze