3Written by commercial-scale grower Mel Thomas, Cannabis Cultivation divulges the expertise, tips, and insight he learned at the helm of one of the world's largest marijuana growing operations. Ideal for beginners and anyone interested in learning more about growing marijuana indoors, the book is free of technical jargon and boring theory, and its step-by-step directions enable anyone to grow and harvest the highest quality marijuana using simple techniques and inexpensive, everyday gardening tools. All of the important factors that influence growth rate, yield, and potency are covered, including lighting, planting mediums, pH, nutrients, water systems, air, and temperature. With extra focus on small gardens and security, this is the perfect book for the home grower and medical growers.