Clean way to add extra Co2?

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However, I have found that just 150 Watts of the proper wavelength light, and >80F. temperatures make excellent use of the extra CO2.:thumbsup:

I'm certainly about to test that theory with my next grow. I'll be using two tri-band LED UFOs, and four 4' T5 sun blaze strips (two grow spec, two bloom spec) in a small cabinet with my C02 system. Temp should hold steady at about 85-90F.

Lumens per square foot will be at about 3650... so lower than the typical "requirement"... but it's mostly concentrated at the most useful spectrums.