I don't understand. He tested a 5100k vs. a 2700k, and had an explosion of growth. Did I miss the page where he tested the 5100k vs the 6500? Also the 5100k does better because it has an internal reflector?
I don't understand. He tested a 5100k vs. a 2700k, and had an explosion of growth. Did I miss the page where he tested the 5100k vs the 6500? Also the 5100k does better because it has an internal reflector?
The 51K does have an interal reflector but that is not the reason why it works better, 5100K is far less yellow then the 21K. He started his ref with a 65K and found better results with the 51K. Timber the 65ks are fine I would just not go higher then that. You should stay with 51k or 65K. I just found that these bulbs work better then my LOA one I had before that were 65k. The biggest thing is that they are cheap. I get the 19W ones for 11 bucks and I use two of them.