The LED Grow Book: Second Edition begins with a deep dive into LED grow lights and why they matter. Topics include plant lighting terms, why we would want to use LEDs to grow plants, and how plants interact with various wavelengths of light. The discussion then turns to LED grow lights themselves: what they're made of, what wavelengths they emit, and what to look for in grow light fixtures and the companies that manufacture them.
The second half of The LED Grow Book: Second Edition provides a primer on good indoor gardening practice, including how LED grow lights affect growing indoors. Sloper provides advice on how to design and build an indoor grow space, what growing system to use, how and what to feed plants, and how to manage pests. The book concludes with some final thoughts on LED grow lights and good gardening practice.