EYE Hortilux 315 Watt CMH Bulk Lamp
Best high-output lighting for serious indoor horticulturalists seeking natural sunlight results.
The EYE HORTILUX Ceramic Metal Halide (CMH) 315 grow lamp is engineered for horticulture, allowing beneficial UV light to pass through its specialized glass, unlike retail lamps. This 315w CMH lamp features a PZGX18 (bi-pin) base and is compatible only with fixtures designed for this base. It offers optimal growth for 12-13 months and is made in the USA. This lamp provides 50% more UV light than competing lamps, promoting better plant growth and higher yields by more closely imitating natural sunlight.
$29.95
Owner Satisfaction
4.5
/ 5
Category Rank
42
/ 90
#42 in Light Bulbs
Price vs Category Average
-72%
Below average
Wattage
315
/ w
Who it's for
- Indoor gardeners seeking natural growth across all plant life stages
- Efficiency-minded growers looking to maximize light output per watt
- Budget-conscious cultivators wanting long-term reliability and consistent light quality
Who should skip it
- New growers working with a strictly limited initial startup budget
- Hobbyists currently using standard HID lighting systems without compatible ballasts
- Indoor farmers lacking advanced ventilation or climate control infrastructure
Performance breakdown
Spectral Accuracy
Advanced UV transmission closely mimics the natural solar spectrum for plants.
Photosynthetic Efficiency
Engineered for superior photon flux to maximize plant growth potential.
Operational Longevity
Maintains optimal output for a full year of intensive cultivation.
Color Rendering
High CRI ensures accurate visual assessment of plant health and development.
Build Quality
Robust American manufacturing standards ensure consistent performance and durability.
System Compatibility
Specialized bi-pin base limits use to specific dedicated horticultural fixtures.
Key Specs
Wattage
315w
Base Type
PZGX18 (bi-pin)
Color Temperature
4100K
Initial Lumens
32,500
CRI
90
Dimensions
11″ X 2.5″ X 2.5″
Weight
0.6 lbs
Warranty
1 Year
Features
- Designed specifically for horticulture with a spectrum that benefits plant growth.
- Allows UV light to pass through, mimicking natural sunlight for better plant development.
- Offers 50% more UV light compared to competitive lamps.
- Engineered for higher photosynthetic photon flux (YPF) than other lamps.
- Provides extended optimal growth period of 12-13 months.
- Made in the USA.
What customers say
Customers consistently praise the EYE Hortilux 315 Watt CMH lamp for its exceptional quality and reliability. Many users highlight the lamp's consistent performance and impressive light spectrum, which significantly benefits plant growth and yield. The product is frequently described as a dependable choice, offering long lasting operation without issues. While some note the initial investment, the perceived durability and superior results often justify the cost, making it a highly valued component for serious growers. Its robust construction and consistent output underscore a strong sense of trust among its user base.
Know before you buy
This lamp requires a fixture specifically designed for a PZGX18 bi-pin base. It is not compatible with standard mogul or medium base sockets.
The EYE Hortilux 315W CMH is engineered with specialized glass that allows 50% more UV light to pass through compared to standard retail lamps. This mimics natural sunlight more closely, which can lead to improved plant development and higher yields.
For optimal growth results, you should replace this lamp every 12 to 13 months. After this period, the light output and spectral quality will begin to degrade, impacting your plants' development.
If the lamp is turned off, it requires a 15-minute cool-down period before it can be re-ignited. Ensure your timer settings account for this delay to avoid potential damage to the bulb or ballast.
Yes, with a 4100K color temperature and a high CRI of 90, this lamp provides a broad, balanced spectrum that is suitable for both vegetative and flowering stages of plant growth.
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$30