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


3K-R 500W Single Ended CMH

Color: 3100K

Type: SE-CMH

Wattage: 500W

PPF:  860 umol/s

CRI: 87

Hours: 15,000

SKU#: GC500W3KR01

Manufacturer: Grower's Choice

MSRP $159