High Pressure Sodium (HPS)
A type of light commonly used for indoor gardening especially in the flowering stage of growth. The bulb mimics outdoor autumn conditions emitting a white light leaning into the orange/red spectrum. HPS bulbs have a usable bulb life from 2 to 5 years and are extremely energy efficient in comparison to incandescent bulbs.
Metal Halide (MH)
A type of light commonly used for indoor gardening especially at the vegetative stage of growth. The bulb emits an intense, blue-white light that is ideal for creating stocky, strong plants with dense green foliage. MH lights are 5 times as energy efficient as a standard incandescent bulb with a usable life span of 2 years.
Ceramic Metal Halide (CMH)
Ceramic Metal Halide (CMH or CDM) lamps are a relatively new source of HID light that is a variation of the traditional Metal Halide HID lamp. CMH lamps use 20% of the power of comparable incandescent light bulbs for the same output (80-117 lumens/watt) and retain their color spectrum better than most other gas discharge lamps, making them a great option for indoor grow lights.
LEDS are a two-lead semiconductor light source. LEDs have many advantages over incandescent light sources, including lower energy consumption, lower heat, longer lifetime, improved physical robustness, smaller size, and faster switching. Unlike high pressure sodium bulbs, they do not emit a lot of heat into the growing environment.
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. Fluorescents produce two to three times more light than incandescent bulbs for the same amount of energy. They are the most inexpensive lights for indoor grows. Full-spectrum fluorescent bulbs, such as produce a balance of cool and warm light that replicates the natural solar spectrum.
Induction lighting is essentially a fluorescent light without electrodes or filaments, the items that frequently cause other bulbs to burn out quickly. An induction lamp system uses a technology of light generation that combines the basic principles of induction and gas discharge. Void of electrodes this technology delivers 100,000 hours of natural sunlight light spectrums with rare earth horticulture blend phosphors for full PAR spectrum photosynthesis for plant growth.
Plasma grow lights generate light by exciting sulfur plasma with microwave radiation. They work by using Light Emitting Plasma (LEP) bulbs, which seek to mimic the spectral output of the sun. They’re a solid-state light source, meaning they do not have an electrode.
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