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Grower's Choice 3K 500 Watt Single Ended CMH Bulb

Save $66.00 Save $66.00
Original price $185.00
Original price $185.00 - Original price $185.00
Original price $185.00
Current price $119.00
$119.00 - $119.00
Current price $119.00

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Grower’s Choice 3k-CMH lamp utilizes a full phase spectrum that is designed to be used in all stages of growth but optimized for bloom.

With a Color Rendering Index of 90 the GC 3k spectrum is very close to natural sunlight but with modest blues, extra red and UV light to serve your plants photosynthetic needs during the flowering phase, increasing yields and resin production.

Grower's Choice 3100K 500 Watt SE CMH Bulb Features

  • For use in any standard 500W CMH fixture
  • Produces more PAR per watt than HPS
  • Richest spectrum flowering lamp on the market with a CRI of 90
  • Optimal for flowering but can be used for Veg as well
  • Promotes higher rate of metabolic activity and resin production through the use of UV and far-red spectra


  • Spectrum: 3100K
  • Lumens Per Watt: 115
  • Lumens At 100 Hours: 56,000
  • CRI: 90
  • Photon Flux: 840 umol/s
  • Lifespan: 15,000 hours

See the full spec sheet here.

Power 500 watts
Spectrum 3100K
Lumen@100 Hrs 56,000
Lumens Per Watt 115
Photon Flux 840 umol/s
CRI 90
Lifespan 15,000 hrs

- Free Shipping on all orders $175+ in the continental US.*
- 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.