PAR Question

stonedu

Well-Known Member
I'm sure this has been addressed before, but can't find.
To me distance from light source is big. So that would mean lights as close to plant would be best.
Anyway question is.
Is there a comparison of par/watt for different kinds of lights?
 

stonedu

Well-Known Member
Guod: Great website thanks.
flicklester: Yea PPFD vs Distance away for different type of bulbs is what I'm REALLY REALLY after.

Thank you both, I typed the question from my phone and it was pretty vague, sorry about that.

For instance I have to use my xgs-190 between 1.5' and 2' away from the plants, I'd like to know that the PPFD is at each distance.
and I'd like to know the same for other bulbs T12,T8,T5,T5HO, etc. especially at the glass of the bulb.
 
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