Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt
Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt - Grow Lights
Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt - GC-315AF3KR240
Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt- | Hydroponics | Indoor Grow Supply Superstore

Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt

SKU: GC-315AF3KR240
Current Stock: 96
Lead Time: This product ships Free in 3-5 Business Days
MSRP: $299.00
— You save $32.50
Subtotal: $266.50

Free Returns

Learn More.
Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt

Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt

$299.00 $266.50

Growers Choice 315 Watt CMH All in One Fixture with 3K-R Bulb, 240 Volt

$299.00 $266.50
  • Coverage Area
    Veg: 4' x 4'; Flower: 3' x 3'
  • Exact Watts
    315 Watts
  • Voltage
    240 Volts
  • Est. Electricity Cost /mo
  • Warranty
    3 Year

Growers Choice 315W CMH

Grower's Choice Horticultural Lighting has introduced their first digital 315 watt ceramic metal halide fixture. It utilizes advanced low frequency square wave technology and high efficiency 315 watt ceramic metal halide grow lamp. The GC-315 delivers the highest efficiency and closest spectrum to actual sunlight in the commercial horticultural industry.

The Growers Choice 315W CMH All-In-One Fixture is just one of the fixtures in the 3rd Generation Fixtures. The other 3rd Gen fixtures:

The Growers Choice 315 CMH fixture is compatible with the Growers Choice Master Lighting Controller

This dual-channel controller allows daisy chaining up to 100 fixtures per zone. Enabling complete control of your growing environment with timed on/off switching, sunrise/sunset, and precise temperature readings with dual thermal probes and thermal-threshold auto dim-shutdown for additional protection.

The Growers Choice 315 CMH All-In-One Fixture is available in 4 different lamp choices (spectrum).

Your can view all of Growers Choice 315W CMH Bulbs here:

Growers Choice 315 CMH

Unbeatable Yields & Unmatched Quality

Grower's Choice Master Pursuit 1000W covers all your lighting needs. These fixtures come shipped with your choice of bulb for the spectrum of light that you require. Available in 4 color temperatures.


Full Phase

3100K Spectrum


Red Enhanced

3100K-R Spectrum


Day Light

4200K Spectrum



10,000K Spectrum

3,100K - Full Phase

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.

3,000K-R - Red Enhanced

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.

4,200K - Day Light

4K CMH: 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.

10,000K - Finishing

Grower's Choice final phase 10k-CMH finishing lamp should be used during the last week to two weeks before harvest and is specifically designed to emit photons mainly in the ultraviolet 350-425 nm wavelength. As high amounts of UV light cause damage to plant cells, plants compensate in order to protect itself and facilitate reproduction by releasing more resinous oils which translates into a higher quality yield

Features & Benefits

Smart Step
Full Circuit Protection
Smart Start
Soft Start
Lamp Compatibility
High Energy Efficiency
Frequency Adjustment
Super Lumen
Running Temperature
RF Shielding

Dimmable Option

The GC-315 and GC-1000 Digital Ballasts allow lamps of various wattages to be operated in the same unit simply by adjusting the dial on the ballast. Each lamp will be operated to the exact specification that the lamp requires.

Smart Step Technology

By turning the dial on the GC Series Digital Ballast you can reduce the output of a lamp when not so much power is needed. Just turn the dial again to step back to full power.

Full Circuit Protection

The GC Series Digital Ballast uses a sophisticated software controlled circuit breaking system that is not seen in other manufacturer's ballasts. The system protects against a series of faults including: Open Circuit Protection, Short Circuit Protection, Over Voltage Protection, Under Voltage Protection and Over Temperature Protection. On Ignition the ballast performs a 3 second test of the circuit and in the event of a fault the ballast will go into protection mode to avoid damage to the ballast and lamp.

Smart Start™ Ignition Control

This revolutionary feature, unique to our products, makes GC Series Digital Ballast the safest and most reliable ballast when used in automated multiple lamp applications. When multiple units are connected to the same mains circuit, our integrated Ignition Control software will completely balance the electrical draw by igniting one lamp at a time to prevent electrical surges and spikes that can overload the mains circuit and trip circuit breaking systems. For further efficiency, this feature is activated alongside our 'Soft Start Technology'.

Soft Start Technology

Soft Start Technology prolongs lamp life by stopping current rush to the lamp and preventing lamp overload. When the ballast is started from cold there will be a 3 second fixed delay before ignition. After ignition there will be a series of random 0-2 second delays before full brightness is reached after approximately 3-5 minutes. SoftStart Technology is also activated when increasing and decreasing power to the lamp using the 'Smart-Step' feature.

Re-Strike of Hot Lamp after Mains Failure

The GC Series Digital Ballast uses a timed re-strike system that prevents the ballast from re-striking a hot lamp after a power failure. If a hot lamp is detected, the re-strike will be delayed for 60 second intervals until the lamp has cooled sufficiently to be re-ignited. Re-ignition is then controlled by 'SmartStart Ignition Control' and 'Soft Start Technology' software.

Lamp Compatibility

The GC Series Digital Ballast is suitable for use with all good quality HPS, Metal Halide and Ceramic Metal Halide lamps. For a guaranteed perfect match and the best results we recommend Growers Choice horticultural lamps. Growers Choice lamps are optimized for use with high efficiency electronic ballasts with adjustable output.

High Energy Efficiency

The GC Series Digital Ballast is up to 30% more efficient than standard magnetic ballast producing more lumens of light per watt of consumed energy. Efficiency does not diminish and is maintained for the entire life of the unit.

Automatic Frequency Adjustment

The GC Series Digital Ballast automatically adjusts its output frequency to maintain a constant output regardless of input power fluctuations and ageing lamps. This also prevents 'lamp flicker'.

Super Lumen

The Super Lumen feature on GC-315 and GC-1000 will increase the output of the ballasts highest wattage lamp to achieve maximum lamp performance. Increase is approximately 10% depending on model.

Running Temperature

The GC Series Digital Ballasts' unique case design acts as a superior heat sink making the ballast extremely cool running without the need for internal fans.

RF Shielding

The GC Series Digital Ballast has superior RF Shielding with Total Harmonic Distortion (THD) of less than 10% meaning it will not interfere with television or radio equipment.


Fixture Grower's Choice 315W CMH
Rated Main Voltage 120/240V 240V 277V
Input Current 2.9 Amps - 1.5 Amps 1.5 Amps 1.1 Amps
Input Wattage +/- 3% 315 Watts
Power factor > 0.98%
THD < 10%
Required Lamp Voltage 110 Volts - 140 Volts
Frequency 50 - 60 Hz
Ignition Voltage 3KV - 5KV
UL Listed No
Lead Time This product ships Free in 3-5 Business Days
Prop 65 No
EACH - Weight(lb) 14
EACH - Height(in) 7
EACH - Length(in) 17
EACH - Width(in) 8
Total Sold 0
Weight (lb) 18
Height (in) 11
UPC 713440682766
Width (in) 14
Amps 1.5A
Brand Growers Choice
Exact Watts 315 Watts
Voltage 240 Volts
Warranty 3 Year
Bulb Type Single Ended Ceramic Metal Halide
Lighting Type CMH - Single Ended
Bulb(s) Included Yes
Frequency 50/60Hz
Coverage Area 50/60Hz
Est. Electricity Cost /mo 13.6
Ballast Type Digital Ballast
Bulb Lumens 33000

Related Products

Recently Viewed Products