Sunmaster manufactures superior High Grade horticultural lamps and is a division of Venture Lighting International.

They are known for their 3, 4, and 6 thousand degree Kelvin color temperature lamps. Each class of lamp they manufacture has had the metal halides inside the ark tube modified to burn at specific color temperatures without the need for colored glass or coatings.

• The 3k lamp works very well to promote the bloom cycle of plants as it has had the red spectrum output increased dramatically.
• The 4k works well for general plant growth.
• The 6k lamps work well to promote very fast and prolific bushy vegetation.

It is good to note that of all the colors in the spectrum, plants need a larger percentage of the blue spectrum to be healthy. This is the color that drives photosynthesis and translocates sugars.

The red, orange and yellow colors of the spectrum are hormonal tripping colors. This is to say that when the plant has these electromagnetic wavelengths pass thru the leaves; bloom hormones are produced in the anticipation of the fall and winter seasons.

Note: Lamps labeled HOR (horizontal) and BU (base up) are position oriented and will give you the highest light output available for their wattage. They are designed to burn in their designated positions only.

Lamps labeled U (universal) may be burned in any position. However, they will be less bright than position oriented lamps with the same wattage.

See Hydroponics Lighting for more detail about MH, HPS, warm, cool, neutral lamps and conversion bulbs.

Meta Halide Bulbs (MH)

Item ID	Watts	Type	Initial Lumens	Growth	Placement	$Price
SM1100WUS	1100	Warm Deluxe 3K	133,000	High Bloom Growth	Universal	119.95
SM1000CUS	1000	Cool Deluxe 6K	80,000	High Vegetation Growth	Universal	114.95
SM1000NBS	1000	Neutral Deluxe 4K	115,000	High Grade	Base Up only	79.95
SM1000NUS	1000	Neutral Deluxe 4K	110,000	High Grade	Universal	74.95
SM1000WBS	1000	Warm Deluxe 3K	115,000	Bloom Growth	Base Up only	104.95
SM1000WHS	1000	Warm Deluxe 3K	115,000	Bloom Growth	Horizontal only	104.95
SM1000WS	1000	Warm Deluxe 3K	105,000	Bloom Growth	Universal	98.95
SM1000CU	1000	Daylight Deluxe 5K	100,000	Conversion	Universal	114.95
SM1000US	1000	Neutral Deluxe 4K	105,000	Conversion	Universal	99.95
SM400CU6	400	Cool Deluxe 6K	30,000	High Vegetation	Universal	99.95
SM400NU	400	Neutral Deluxe 4K	36,000	High Grade	Universal	47.95
SM400WB	400	Warm Deluxe 3K	38,000	High Bloom Growth	Base Up only	69.95
SM400WH	400	Warm Deluxe 3K	38,000	High Bloom Growth	Horizontal only	69.95
SMC400US	400	Neutral Deluxe	36,000	Conversion	Universal	54.95
SMC600CU	600	Cool Deluxe	50,000	Conversion	Universal	99.95