Flower Footprint: 4' x 4'
Grower's Choice 500W Single Ended CMH Bulb
Ceramic Metal Halide lamps are the pinnacle generation of HID lighting. Utilizing ceramics materials instead of quartz for the construction of the arch tubes, which contain the metal halide gas that causes the lamps to operate at higher temperatures, increasing efficiency and providing a more complete spectrum, covering the inadequacies standard MH and HPS poses.
This makes CMH lamps a better option for horticulture as they efficiently produce more light across the PAR spectrum where it matters most.
Grower’s Choice has four different CMH spectrums lamps to customize the light output for every stage of plant growth for optimal harvest potential. For growers using dual lamp models lamp spectrum can be further customized by utilizing different spectrum lamps in the same fixture. We found that 3k + 3K-R provides the best results during the flowering phase, finishing with the 10k lamp in during the last 1 week before harvest.
3K 500W Single Ended CMH:
- Color: 3100K
- Type: SE-CMH
- Wattage: 500W
- Initial Par: 840 umol/s
- CRI: 90
- Hours: 15,000
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.
- 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
3K-R 500W Single Ended CMH
- Color: 3100K
- Type: SE-CMH
- Wattage: 500W
- Initial Par: 860 umol/s
- CRI: 87
- Hours: 15,000
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
4K 500W Single Ended CMH
- Color: 4200K
- Type: SE-CMH
- Wattage: 500W
- Initial Par: 800 umol/s
- CRI: 97
- Hours: 15,000
Grower’s Choice 4k-CMH Daylight lamp is the best option for hearty vegetative growth leading to a healthy bloom phase. With a Color Rendering Index of 98 and intense full spectrum the Grower’s Choice 4k lamp provides near sunlight photon output. This leads to healthier and more robust vegetative growth.
- For use in any 500W CMH fixture
- Produces more PAR per watt than standard Metal Halide
- Richest spectrum on the market
- CRI of 97 makes this lamp the closest solution to sunlight available
- promotes extremely tight inter-nodal spacing leading to more flowering sites and a fuller canopy
- Offers significant improvement in spectral quality over standard Metal Halide
Warranty & Return Policy
Every Growers Choice Light is 100% guaranteed and has a complete 3 year warranty.
Grower’s Choice offers a warranty ONLY to purchasers of Grower’s Choice products that are bought through an authorized distributor. Warranties are only valid through the original purchaser with their purchase receipt. The warranty will not carry over to second-hand owners. All warranty claims must be submitted through the retail/online store purchased from or through Grower’s Choice. Customers must first ship back the defective units to be evaluated for repair or replacement (at their own cost). Once repairs or replacement has been processed Grower’s Choice will ship back the units, free of charge, as a courtesy (must be within the 48-contiguous states). If you are international, duty & taxes will be applied by customs & you will be liable for all fees. If products are misused, mishandled, or tampered with in any way your warranty will be voided indefinitely. In the event, you need to process another warranty claim & you have not closed out your previous warranty claim, no warranty will be processed, as your warranty has been voided. Do not throw Grower’s Choice products out or cut any power cords until approval is provided by Grower’s Choice via email. If expedited shipping is required for replacements, you will be liable for the cost & must notify Grower’s Choice right away. If you are unable to provide proof of defect for your warranty, you can request a return label. Once the product is returned to Grower’s Choice, it will be tested. In the event Grower's Choice is unable to identify a defect, you will be liable for round-trip shipping. If you are shipping a return to Grower’s Choice be sure to provide a picture via email of the drop-off receipt provided by UPS. This will provide confirmation that the package has been handed off to UPS & removes you from reliability if lost by UPS. It is always the purchaser’s responsibility to keep track of return shipping & replacement tracking. If you notice any delays or concerning notices on your tracking, reach out to Grower’s Choice right away, do NOT wait several days before contacting. TSL Horti-Tech and Growers Choice shall not be held responsible for any damage caused by the operation of the unit, be it incidental or consequential or any type including, without limitation, damage or injury caused to other products, machinery, or buildings. Nor will responsibility be accepted for loss of time or profit, or for any inconvenience caused in any way whatsoever.
Return policy:
Grower’s Choice ONLY accept returns within 30 days of purchase, in original packaging/unopened, & with prior authorization from Grower’s Choice representative or manager. A restocking fee of 25% will be charged on all returned items, as well as roundtrip shipping, once the inspection has been completed, a credit memo will be provided according to our inspection findings. If the return is opened/used, missing any items or is incomplete additional charges will be applied.
Free Shipping
We are proud to offer FREE SHIPPING on MOST orders of $100 or more ($200 or more for AC Infinity) with a physical address (no P.O. Boxes) within the contiguous United States. Please note some exceptions do apply.
That means everywhere in the United States besides Alaska, Hawaii, and Puerto Rico. If you live in one of these locations, please contact us for a shipping quote.
Please note: We process all website orders Monday - Friday, 7 am - 4 pm. If you placed an order over the weekend or after hours, it will not get processed until the next business day.
Price Match Guarantee
We work very hard to ensure that we offer the absolute lowest prices online.
That means that if you find any authorized online retailer that has a lower price than us, just let us know and we'll match their price!
Please note some restrictions apply and this does NOT apply to any auction, discounter, or market platform including eBay, Amazon, Alibaba, AliExpress, etc.
For additional details please see our full Price Guarantee Policy here.
Guaranteed Lowest Price!