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GrowBright 315w Ceramic Metal Halide Bulb – 3000K




Get more for less with the GrowBright 315w ceramic metal halide bulb. Designed to maximize the benefits of CMH & LEC lighting systems, the GrowBright 315w ceramic metal halide bulb provides an enhanced ceramic spectrum with excellent efficiency for an unbeatable price. Advanced ceramic arc tube design allows the GrowBright 315w ceramic metal halide bulb to deliver beneficial UV and far red output, while its PGZ18 or pin-type base and universal burn position make it fully compatible with the most popular CMH systems including vertical fixtures such as the Sun System LEC 315 and HTG Supply Armour.


  • 3000K
  • 33,000 lumens
  • 15,000-hr
  • UV & far-red output
  • Universal burn

Check out our full selection of complete grow lights for the latest in high-efficiency lighting solutions! From complete 315w CMH systems to T5 and LED grow lights, HTG Supply is the #1 place to save on the best grow lights in the industry!

In stock

Your Garden's Success is our #1 Priority

HTG Supply is committed to providing you with the very best products, pricing and service in the industry. We will ship your order fast and discreetly packaged to protect your privacy. Buy with confidence knowing your HTG Supply purchase includes simple returns as well as lifetime product support. Call our team of real growing experts with your purchasing or product use questions, and we will be here to help!

See it for less somewhere else? Give us a call and we’ll beat any online competitor’s price!

Customer Service:  1-866-710-GROW (4769) | | Hours: Mon-Fri 9:00 a.m. to 5:00 p.m.


GrowBright 315w CMH – 3000K

Maximize your flowering growth with the GrowBright 315w Ceramic Metal Halide 3000K. With a 33,000 lumen output, enhanced 3000K bloom spectrum, beneficial UV & far-red wavelengths, and cooler operation than other HID lights, the GrowBright 315w CMH goes toe to toe with industry-leading brands in providing growing power. Get with all the benefits of CMH lighting while saving that money with the GrowBright 315w CMH. Grow Bigger – Grow Better – GrowBright!


• System compatibility – 315 watt digital / C18210
• Base type – PG18 / PGZ18 / PGZX18
• Color Temperature – 3000K
• 33,000 Lumens
• 15,000-hour average lamp life
• Beneficial ultraviolet (UV) & far-red output
• Universal burn
• 1-year warranty

Weight 2 lbs