I've seen okay results with T-12s, but you need a lot of them. What's cool about T-12s is that they put off zero heat on the tube itself. The only hot parts are at the two ends of the bulb. That means you can have plants touching the light without any damage. Negatives of using T-12s is that light penetration/intensity sucks. You'd be better off with CFLs, T-5s, or T-8s.
Orzy Reviewed by Orzy on . Grow Hi am new to growing and i think i finally found the lights. Buy 40W T12 Full Spectrum Fluorescent Bulbs Here! But where do i accutly plug the lights into? like a lamp i can't find that anywhere can any one tell me what these bulbs go into? And are the bulbs good choice for my first grow? Rating: 5