







🌿 Illuminate your indoor garden with power and precision—grow like a pro, glow like a trendsetter!
The CMH 315W Ceramic Metal Halide grow light bulb pack offers a high PAR output of 625 μmol/s and a well-balanced full spectrum including UVA and red light, designed to enhance plant growth and flavor. Featuring a durable double-jacketed PGZX18 base compatible with most fixtures, it ensures safety and longevity with over 20,000 hours of life. Ideal for indoor flowering, this 315W bulb delivers 35,000 lumens at 3100K color temperature, making it a premium choice for professional and enthusiast growers seeking efficient, reliable, and spectrum-optimized lighting.





| Brand | GRUOTVSZAK |
| Light Type | Metal Halide |
| Special Feature | Full Spectrum |
| Wattage | 315 watts |
| Incandescent Equivalent Wattage | 2500 Watts |
| Light Color | white |
| Voltage | 100 Volts |
| Unit Count | 2.0 Count |
| Color Temperature | 3100 Kelvin |
| Number of Items | 2 |
| Brightness | 35000 Lumen |
| Shape | Tubular(T) |
| Material | Glass |
| Indoor/Outdoor Usage | Indoor |
| Power Source | Corded Electric |
| Color Rendering Index | 80 |
| Power Consumption | 315 Watts |
| Item Package Quantity | 1 |
| Light Source Type | Metal-halide Lamp |
| Light Source Wattage | 315 Watts |
| Accepted voltage frequency | 100 to 240 Volts and 50 Hertz to 60 Hertz |
| Control Method | App |
| Average Life | 20000 Hours |
| White Brightness | 35000 Lumens |
| Efficiency | 108.57 lumen/watt |
| Style | 3000K Large Box With 2 Bulbs |
| Global Trade Identification Number | 06974568040027 |
| Manufacturer | GRUOTVSZAK |
| Color | Transparent |
| Light Output Maximum | 35000 Lumens |
| Part Number | CMH315W3K-2 |
| Item Weight | 1.41 pounds |
| Package Dimensions | 9.57 x 5.91 x 2.36 inches |
| Item model number | CMH315W3K-2 |
| Finish types | Metallic |
| Included Components | Bulb included |
| Maximum Compatible Wattage | 315 Watts |
| Special Features | Full Spectrum |
| Batteries Included? | No |
| Batteries Required? | No |
| Wattage | 315 Watts |
| Bulb Diameter | 39 Millimeters |
| Bulb Length | 193 Millimeters |
K**O
Works great, love it!
Had trouble finding a replacement bulb and this one works great! Great brightness and good value for your money too considering the alternatives!
E**C
Good so far
Reviews always have me feeling some type of way. They range from excellent to do not buy. Took a chance with these since 2 are the price of 1 name brand bulb. So far they work and haven't had any issues.Only problem I had is with driver dropping package off. These packages should be labeled as fragile. The driver dropped the packages onto the ground instead of setting them down nicely. I get they are in a hurry but I feel if packaging was labeled as fragile the delivery driver would of taken the extra precautions to gently set the package down.
G**M
One of two bulbs failed immediately
We just got these bulbs in and installed, but one burned out within days of being used. Not sure how to do a return for just one. If the vendor can address this, I will change my rating.
S**N
Lights came intact, packaged well.
Product works as advertised. Got to wait and see how long they last.
H**Y
No kr-85 and great packaging for shipping!
Can't wait to run them in the very near future!!
J**R
Cooked my plants
This was my second order of these bulbs. The first 2 are still working great. The second order I installed both in the same 4x8 tent and the 4 plants under one side cooked and the 2 closest to that same bulb sustained bad burns. The lose was worth 10 times the cost of these cheap bulbs. Lesson learned I'll stick to quality from now on
M**N
Buy More than you need!!!!!
If you need one bulb order three..... And hopefully One will arrive without being broken. Sick of returning broken bulbs for replacements and the replacements arrive broken also....
C**Y
Not great
One bulb gave out within a couple days,don’t have much hope for the 2nd
Trustpilot
5 days ago
3 weeks ago