Chris Trem

MDF Mineral grow is in Bartow Florida. https://www.mdfmineralgrow.com/mineral-grow.html
I live just north of Ocala and I went down there a few days ago and they filled my pickup truck with soft rock phosphate, about 1,000 lbs. Nice people.
I follow the Carey Reams growing method. The man was a genius, ahead of his time.

Another interesting short video showing the difference between incandescents, LEDs and CFLs.

https://rumble.com/v64dfg7-are-dangerous-led-light-bulbs-making-you-sick-solution-use-incandescent-lig.html?playlist_id=Y2Ne4PXm4HM

Dr. Alexander Wunsch is a doctor, researcher, and consultant in the fields of light therapy, photobiology, and biophysics. He has posted a lot of fascinating information on light and how it affects the body and much more.
https://vimeopro.com/alexanderwunsch/alexander-wunsch-in-english