Electricity and Safety Marijuana Horticulture by Jorge Cervantes You don’t need to understand the basics of electricity to grow indoors or in a greenhouse, but understanding the basics will save…

LP Sodium Lamps Marijuana Horticulture by Jorge Cervantes Low Pressure sodium lamps are monochromatic. Do not use these amps to grow cannabis. They produce light in a very narrow portion…

Tungsten Halogen Lamps Marijuana Horticulture by Jorge Cervantes The tungsten halogen lamp is a poor grow light. It was originally called Iodine Quartz lamp. The outer tube is made of…

Incandescent Lamps Marijuana Horticulture by Jorge Cervantes Incandescent lamps were invented by Thomas Edison. Light is produced by sending electricity through the filament, a super fine wire inside the bulb.…

Other Lamps Marijuana Horticulture by Jorge Cervantes Several other marijuana grow lamps deserve a mention, however, they grow marijuana poorly. Incandescent lamps are inefficient, tungsten halogen lamps are bright but…

Compact Fluorescent Lamps Marijuana Horticulture by Jorge Cervantes Available since the early 1990s, compact fluorescent lamps (CFL) are finally available in larger wattages. The larger CFLs are having a major…

Fluorescent Lamps Marijuana Horticulture by Jorge Cervantes Fluorescent lamps have gone through major changes in recent years. New bulbs produce more light. Most growers use fluorescents to grow clones and…

Mercury Vapor Lamps Marijuana Horticulture by Jorge Cervantes The mercury vapor lamp is the oldest and best known member of the HID family. The HID principle was first used with…

Conversion Bulbs Marijuana Horticulture by Jorge Cervantes Conversion, or retrofit, bulbs increase flexibility. One type of conversion bulb allows you t utilize a metal halide (or mercury vapor) system with…

HPS Bulbs Marijuana Horticulture by Jorge Cervantes High pressure sodium bulbs are used for industrial, residential, and horticultural lighting. The bulbs are inexpensive and readily available. Discount building stores often…

HPS Ballasts Marijuana Horticulture by Jorge Cervantes A special ballasts is specifically required for each wattage of HP sodium lamp. Each wattage lamp has unique operating wattages and currents during…

HPS Life and Lumen Maintenance Marijuana Horticulture by Jorge Cervantes High pressure sodium lamps have the longest life and best lumen maintenance of all HIDs. Eventually, the sodium bleeds out…

HPS Construction and Operation Marijuana Horticulture by Jorge Cervantes High pressure sodium lamps produce light by passing electricity through vaporized sodium and mercury within an arc tube. The HP sodium…

High Pressure Sodium Systems Marijuana Horticulture by Jorge Cervantes The most impressive fact about the 600-watt high pressure sodium lamp is that it produces 90,000 initial lumens. The HP sodium…

Metal Halide Bulbs Marijuana Horticulture by Jorge Cervantes Universal metal halide bulbs designed to operate in any position, vertical or horizontal, supply up to ten percent less light and often…