Plantmax 400W MH Sky Blue Metal Halide provides an ideal 7200K blue spectrum to help plants grow in vegetative stages.

Features & Benefits

• Sky Blue Metal Halide provides an ideal spectrum to help plants grow in vegetative stages.

What is a Metal Halide (MH) Lamp?

A metal halide lamp is a type of HID (high-intensity discharge) lamp. Mercury vapor lamps are also a type of HID lamp.

In a nutshell, a MH lamp works when an electrical arc goes through a gaseous mix, creating light. With a metal halide lamp, that mix of gases will normally include mercury, xenon or argon, and a variety of metal halides. Additionally, the type of metal halides used helps determine the color temperature of the light emitted.

The MH lamp itself is built with two main sections -- the outer bulb and the inner arc tube. It's with the inner arc tube that the magic happens. When the MH lamp is turned off, the mercury and metal halides are dormant and condensed inside the arc tube. There are two electrodes at either end of the arc tube. When voltage is supplied to the MH lamp, a current of electricity starts at one electrode and passes to the next. This begins to heat up the mercury, causing it to vaporize, and actually helps the electrical current to grow. Things are now heating up, causing the metal halides to turn into gas.

Bulb Specs
Watts: 400
Base: Mog.
Rated Avg. Life (Hrs.): 10,000+
Approximate Initial Lumens: 39,000
CCT (K): 4200

This bulb will work in any Magnetic 400 Watt Metal Halide Ballast or,