Hello all,

Correct me if I'm wrong, lumens measure the light intensity and kelvin measures the light spectrum? With that said and hypothetically speaking, lets say I have two cfls with specs: 6500k and 630 lumens.

Will the total kelvins stay the same and the total lumens equal 1260? Do you add up the total lumens?

-Thanks

Yes kelvin stays the same.

You can use 50w (real) per sq foot, or 5000 lumen's per sq ft as a target, if I remember correctly

__________________
"If a law is unjust, a man is not only right to disobey it, he is obligated to do so." - Thomas Jefferson my grow

But you don't add lumens. Two 630 lumen bulbs produce 630 lumens, they just produce 630 lumens over twice (potentially) the area. The sun puts out 10,000 lumens psf. If you can get 5000 lumens psf with cfl's you're awesome!
Before you purchase CFL's read Roseman's tutorial > CFL Tutorial Happy growing!

__________________
My 1st grow Current growing adventures. My Gallery.