Quote Originally Posted by emilya
I am still working out how to correlate your data with the experiment that I am going to do. I am glad to see yours though, and your work should help in determining the level of "tuned" light needed for quality grows. My experiment is going to be under scrog... so the lights will be much closer than what you are working with. Secondly, I have a fixed space that needs to be lit, 2'x2'... so figuring out how many 5w and 3w lights in my custom lights in that configuration is equal to each of your lights working at a larger distance from the plants as well as larger surface area ... it is making my head hurt. Comparing your Spectra with the Penetrator is probably going to be the closest thing to my experiment, which is going to be 3 controlled stations... one T5-HO, and then 2 LED stations, one twice as many watts as the other.
The more of us that experiment and prove that LED is an effective way to go, the faster this technology will become commonplace, and eventually the prices of the LEDs will come down. I am convinced that this is how best to reduce the costs associated with this hobby. Thank you again for what you are doing. I will will be watching carefully to see the density of the budz developing in each of your stations as well as trichome development and please let us know if any in the group look to you like they are maturing a bit faster than the rest... it's sometimes hard to see from here in the pretty red light.
Your welcome! I'm glad to know there are some following along on the grow.

I would say at this point it looks like the Blackstar is in the lead by a bit, and the Spectra and Penetrator are about equal all the way around.