Sunmaster 400watt Metal Halide Grow Lamp

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Product Overview

Product description SunMaster - Cool Deluxe Metal Halide After several years
of selling a variety of metal halide lamps we now only sell the best, the
Sunmaster range from Venture Lighting. The overall market leader in grow lamps
in the UK, the Sunmaster halides come in two different outputs; 4000 and 7200
kelvins. Blue light is measured in kelvins as opposed to lumens (which is the
measure of light commonly used for sodium and dual spectrum lamps), the higher
the kelvin value the more plant usable light the lamp gives out. Higher kelvin
ratings result in healthier plants, shorter internodal length and increased
yields later in life. The 7200K versions are slightly more expensive than the
4000K versions, but well worth the initial extra outlay with the benefits
clearly showing later in the plants life. The 7200K versions are also the lamp
of choice for adding extra blue spectrum to a lighting setup that contains
mostly sodium lamps - adding approx one halide lamp to every two sodium lamps
dramatically increases overall plant health, and is generally considered by
most experienced growers as the optimum lighting mix. Highly recommended -
these are by far the best metal halide lamps on the market and won't break the
bank.