Grower's Choice 3K-R 500W Single Ended CMH Lamp

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Grower's ChoiceSKU: GC-3KR-500-SE-CMH

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Sale price$159


The Grower’s Choice 500w CMH Lamps are suitable for use in all standard 500w CMH fixtures. The 3K-R is an enhanced version of out 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 difference.

3K-R CMH: Growers Choice 3kr-CMH lamp is tailored specifically to enhance bloom production through the discharge of intensified red shift photon dispersion, which plants need to promote heavier yields and additional UV light to facilitate terpine and resin production as this is a plant’s natural response to protect itself from UV radiation.


  • A slight increase in UV light to promote resin production
  • A taller peak in the Far-red to stimulate metabolic activity during flowering
  • Slightly higher PAR for better flower density
  • Increased intensity in red


  • Color: 3100K
  • Type: SE-CMH
  • Wattage: 500W
  • Initial Par: 860 umol/s
  • CRI: 87
  • Hours: 15,000
  • Manufacturer: Grower's Choice

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