The Grower’s Choice 315w CMH/LEC Lamps are suitable for use in all standard 315w CMH/LEC fixtures. The 3K-R is an enhanced version of our 3K lamp that is designed specifically for plants that are prized for their resin production. It is similar to the original 3K, but it has contains a few subtle differences.
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A slight increase in UV light to promote resin production
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A taller peak in the Far-red to stimulate metabolic activity during flowering
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Slightly higher PAR for better flower density
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Increased intensity in red