Chapter 9: Light, Lamps & Electricity

Marijuana Horticulture

Chapter 9: Light, Lamps & Electricity Marijuana Horticulture: The Indoor / Outdoor Medical Grower’s Bible

by Jorge Cervantes

Light, Spectrum, and Photoperiod

Marijuana needs light to grow. The light must have the proper spectrum and intensity to ensure rapid growth. Light is comprised of several bands of colors. […]

Build your own HPS or MH light system

Build your own HPS or MH light system

One of the best ways to save a bundle on equipment is to wire up your own lights from a kit. By buying the parts unassembled, you can probably construct a light for half of what it would cost “ready made” from a hydro shop. […]

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