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. […]

Grow Gear

Marijuana Grow Basics

Grow Gear Marijuana Grow Basics by Jorge Cervantes

Growing indoors requires grow gear to supply and control light, air, water, and the growing medium. Below is a simple discussion that will give you basic understanding of the grow gear you will need – what it is and how it works.

Light and Lamps

You […]

When do I change my ballast components?

When do I change my ballast components?

by Moshmont

Assuming your ballast is hooked up right and is relatively new, the capacitor (cap) and socket are about the only things that will give you problems. They last about 5 – 10 years on avg. Igniters (ign) […]

What is color temperature of a bulb?

What is color temperature of a bulb?

The color of a light source entails a complicated relationship of different factors, that are important in determining the right light source for your garden. The advantage of Metal Halide lamps is that they provide high-quality, crisp white light in a variety of different color temperatures […]

Does the bulb have to match my ballast?

Does the bulb have to match my ballast?

Yes, Ballasts and Bulbs Should be Matched.

HID bulbs generally need specific ballasts, and any given ballast can usually safely and effectively operate only one type or a few types of HID bulbs.

The bulb wattage must be matched to the ballast. A smaller bulb […]

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. […]

What distance should my light be from my plants?

What distance should my light be from my plants?

For (artificial) light, there is a law that always applies known as the Inverse Square Law. It states that light diminishes exponentially in energy as the distance is increased from the source.

A good example is that you might be getting 1000 PAR Watts […]

What is a suncircle? (circular light mover)

What is a suncircle? (circular light mover)

What is a suncircle? (circular light mover)by ErliquinMade by American Hydroponics, it is a 360 degree rotating light balancer. It will rotate a single lamp or lamps and even of mixed wattage and type over a crop profile in continuous fashion without flex getting tangled. […]

Adjusting your lights

Cannabis Grow Bible

Adjusting your lights The Cannabis Grow Bible

by Greg Green

If you have a good stand or light support you will be able to lower or heighten your light. This is great because the closer your light is to the plant the more light it will receive. […]

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