I now have the knowledge and have learned from all the problems that my friends and I have had while growing over the years, this will save you time and money 100%.

John Berfelo

This book covers a new era of cannabis cultivation with LEDs:

• The newest lighting technologies
• Maximize yield
• Increase potency
• New content and updates
• Vapor Pressure Deficit
• Understand how light affects your growing journey

It's more than a book:

• 17+ Video Tutorials on LED growing
• DLI & VPD calculator
• VPD chart
• Live Q&A sessions