Quote Originally Posted by vanduction
Thank you.

I encourage all posts which discuss the practical aspects of this & similar future experiments.
I'm about two years ahead of you, just to give you a time frame of reference as a courtesy.

Want to know the specific 6 wavelengths Cannabis responds to? I've already promised to not make the light for myself and give out the info, so do what you want.

Here are the minimum specs:

30% blue +/-5% in either direction for 460 or 420nm blue, plus 35% +/-5% for 660nm red and 630nm red.

I cannot give you the UV and IR specs that provide super-growth, because it's not for cannabis, it's for fruiting plants like tomatoes and peppers, and cannabis fails under the same type of light.

Cannabis does better under higher amounts of blue, up to 40% blue (wavelength is indeterminate for now,) for flowering power/bud density. This is according to a personal e-mail from someone on this site. I will not expose them, I'll let them expose themselves when I send them the proper equipment to test against my own to make it a fair test. John Lydon has made good note that 290nm increases bud potency in his earlier tests in the later 80s for his Ph.D.

We can only test this stuff for now, but I am sure (with my own sales of personally-grown overstock to dispensaries on a single-blind test versus their stuff on the spot,) that my stuff has topped theirs by far. They offered too much for an ounce of my stuff - I only paid a total of $25 per ounce to produce, they wanted to pay $200.

I refused and gave it at $100/oz. I am not greedy, I pay my taxes, and I don't go for the gold.

Granted this will not apply to every strain. This was fine-tuned but it should yield in a similar manner, within 20% yield weight depending upon how thick you let your plants get.

Remember the YouTube video - 90w LED was = 400w HPS in veg, but not bloom. You need at least half the HID power in LED to match.