Oriental Herbal Nutrient Workshop from Drake on Vimeo.
Learn how to make OHN (Oriental Herbal Nutrient) with this video.
KNF Police are some of the toughest microbes around. They can live with or without oxygen, they persist at nearly boiling, and […]
This video playlist is the Level 2 Training Course for KNF Certification as presented by experienced instructor Eric Drake Weinert. Watching these […]
Download the slides for Dr. Gae Ho Lee’s presentation