Quote Originally Posted by jon420
How is this going to be a very accurate study without using the same amout of watts? ..... I would suggest using the same amount of watts and then trying the experiment again.
Now I know I am a newbie... but last time I looked, it was the power company that measured watts and all the plants cared about was how many lumens / sq. meter were hitting them.

A more efficient light can use less wattage and put out more lumens than its less efficient counterpart. I think that this experiment is going to be a good one as it is based on lumens. I'm also thinking that the differences we will see will be attributed to the actual lumens falling on the plants since a hotter bulb has to be moved farther away and the strength of the light from any source falls off at a factor of distance squared and also the wavelength of the two light sources in each of the growth periods, knowing that flowering needs reds and veg needs blues. Very interesting experiment though! :thumbsup:

Emmie
emilya Reviewed by emilya on . HPS vs. Induction + CFL flowering comparison Hi, this week I will be starting a comparison grow between HPS and Induction lighting. Question: Can induction lighting produce the same flowering performance as HPS lighting, while using 50% or less watts? The goal is NOT any of: - examine veg growth - produce maximum yield - try any other kind of experimentation Methodology: Rating: 5