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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31
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Description
Lightspeed CMH 315W 3100K Double Jacketed LampSwitching from a 1000 watt high pressure sodium or metal halide system to a Lightspeed 315W ceramic metal halide system will increase the growth, health, and yield of your plants and will lower your energy costs by up to 70%. The wide spectrum of our Lightspeed CMH bulbs allows either the 3100K or 4200K to be used from the vegetative phase straight through to flowering, or for maximum growth and yield begin with the 4200K bulb for vegetative and then
Switching from a 1000 watt high pressure sodium or metal halide system to a Lightspeed 315W ceramic metal halide system will increase the growth, health, and yield of your plants and will lower your energy costs by up to 70%. The wide spectrum of our Lightspeed CMH bulbs allows either the 3100K or 4200K to be used from the vegetative phase straight through to flowering, or for maximum growth and yield begin with the 4200K bulb for vegetative and then switch to 3100K for the flowering phase.The lower wattage of our 315W CMH bulb versus the standard 1000W HID bulb translates to less heat being expelled from the bulb and the ability to place the grow fixture closer to the canopy, increasing light intensity and canopy penetration. This double glass jacketed lamp features a bi-pin PGZ18 lamp base and is rated for either open or enclosed fixture use. The ultra-efficient ceramic metal halide system can do the same job as MH and HPS with better results, using less power and emitting less heat. Lightspeed 315W ceramic metal halide bulbs pair well with any bi-pin 315W system, like our Silverstar CMH Reflector 315W Ballast System or the Lightspeed Digital CMH Ballast.
Specifications:
- Wide spectrum can be used from the vegetative phase straight through to flowering
- Produces less heat than traditional grow lights
- Lowers electricity and cooling costs
- Can be placed close to canopy for optimum intensity
- Deep canopy penetration
- Watts: 315
- Kelvin: 3100
- 620 µmol/s
- Color Rendering Index (CRI): 90
- Initial Lumens: 35400
- Base: PGZ18
- Length: 193mm (7.6”)
- Diameter: 38mm (1.5”)
- 1 Year Warranty
Shipping weight: 0.51 lbs
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
My Son Can’t Get Enough of Who Would Win
Format: Hardcover
My four-year-old son is absolutely obsessed with the Who Would Win series! We really enjoy the interesting facts sprinkled throughout the chapters - it makes reading together both fun and educational. Since discovering these books, we’ve happily added more titles to our Who Would Win collection. Highly recommend for curious young readers!
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Reviewed in the United States on November 3, 2025
★★★★★ 5
Kids love it
Format: Hardcover
Very informative. Kids love this series.
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Reviewed in the United States on December 28, 2025
★★★★★ 4
Great books, but the Rumble book is the best!
Format: Hardcover, Format: Hardcover
These books are great books and are filled with tons of mammal, animal, and insect facts. However, after buying several, I realized I was buying the wrong books. This is because we wanted the bracket based “who would win” books. They are the best ones! Apparently, the bracket-based books have “rumble” in the title. The pictures will show the difference. There are only two rumble books, 1 of which will be released Oct 7th.
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Love these easy to read books.
Format: Hardcover
My kid is obsessed with these books. He will read these books so much that they wear out and I have to replace them. This is a great series of books for young readers. It's great for kids who also like would you rather. There are several books in this series and they are all worth buying.
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Reviewed in the United States on August 5, 2025
★★★★★ 5
It keeps them reading AND it keeps them occupied !
Format: Hardcover
My Grandkids LOVE these "Who-Would-Win" Series !! It keeps them reading AND it keeps them occupied !
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Reviewed in the United States on March 31, 2026