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Grower's Choice 3K-R 315 Watt Single Ended CMH Bulb

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Original price $152.00
Original price $152.00 - Original price $152.00
Original price $152.00
Current price $76.00
$76.00 - $76.00
Current price $76.00

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The Grower’s Choice 315w CMH Lamps are suitable for use in all standard 315w CMH fixtures. The 3K-R is an enhanced version of the 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.

Grower's Choice 3000K 315 Watt SE CMH Bulb Features

  • 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


  • Spectrum: 3000K - ideal for bloom
  • Lumens Per Watt: 110
  • CRI: 90
  • Lumens At 100 Hours: 33000
  • Photon Flux: 540 umol/s
  • Lifespan: 15,000 hours

See the full spec sheet here.

Power 315 watts
Spectrum 3000K
Lumen@100 Hrs 33000
Lumens Per Watt 110
Photon Flux 540 umol/s
CRI 90
Lifespan 15,000 hrs

- Free Shipping on all orders $175+ in the continental US (some exclusions apply).
- In most cases tracking info will be provided via email within 24 hours of shipment.
- Easy Returns within 10 days of purchase + 25% restocking fee.
- Please see our Shipping & Returns policy for more details.

Warranty Information
Grower's Choice purchases include a 5 year warranty.