Is CMH better than LED?
LED bulbs last 50,000 hours compared to 20,000 for CMH. If you are planning for obsolescence and want the greatest yield ROI within 1-2-year time frame, choose CMH. And even if you keep your grow space past 5 years, don’t worry, CMH’s provide a greater gram per watt due to their higher PPF and canopy penetration.
What are CMH lights used for?
Using CMH grow lights in your indoor grow room or grow tent is beneficial for many reasons: CMH grow lights provide a broad spectrum. Because CMHs mimic the sun, your plants receive a broad spectrum of light. Your plants will receive UV light from these grow lights.
What is the difference between metal halide and ceramic metal halide?
The largest difference between MH and CMH lamps is the Ceramic or “C” in CMH. This refers to the arc tube material, which is made of a ceramic material – similar to what is used for HPS lamps.
What are cdm grow lights?
What’s a CDM Grow Light? CDM (Ceramic Discharge Metal Halide) grow lights broaden your light spectrum to improve plant health and yield quality. Specifically, CDM lights are known to emit lots of UVA & UVB. Most of the systems we sell come with a Philips 930 Agro or 942 Daylight CDM lamp.
How far should CMH lights be from plants?
Both the 315 LEC and 315 CMH grow lights should be kept at least 18″ from the top of your plants, with some models needing to be kept as far as 3 feet away. “CMH” grow lights have been around for many years, and used to come in typical HID sizes like 400W, 600W and 1000W.
Is CMH better than HPS?
A recent addition to the market is Ceramic Metal Halide (CMH) bulbs. They are more expensive per watt but they have a good spectrum (about 11% blue) and a higher efficiency than HPS in most cases. This makes them ideal for growing from seed to flower with the one bulb.
Do you need a ballast for CMH?
A CMH ballast is responsible for starting and regulating the current in your CMH grow light. Without regulation, the CMH bulb would burn too bright and “pop”, or not start at all. The ballast helps ensure the bulb reaches its standard life span, which in this case can be up to 24,000 hours.
What is the best light to grow with?
What Color Light is Best for Plant Growth?
- Violet-blue light in the 400 – 520 nanometer range encourages chlorophyll absorption, photosynthesis, and growth.
- Red light in the 610 – 720 spectrum range promotes flowering and budding.
Can you touch a CMH bulb?
You cannot touch these bulbs. They even come with a cotton glove. These bulbs, though not used now, used to be one of the many options of aquarium lights.
How far away should CMH lights be from plants?
Can you use LED with CMH?
LEDs cannot do this. They are so much close to the canopy, and the LED light output lacks intensity. LED grow lights are also unidirectional, so the light doesn’t spread out like a CMH grow light can. So all the LEDs must be on all on at the same time.
Can I put a metal halide bulb in a HPS ballast?
The primary visual difference between them is that metal halide light is white and the light emitted from a High Pressure Sodium bulb is amber orange. These bulbs cannot be interchanged without changing their ballast, the regulating element in all light bulbs.
How much area does a 315W CMH cover?
315W / 630W CMH Footprint Coverage The 315W CMH lamp ranges in coverage 3ft x 3ft – 4ft x 4ft. The 630W CMH lamp coverage ranges from 5ft x 5ft – 6ft x 6ft.
Is CMH cooler than HPS?
CMHs Run Cooler than HPS Lights — Another benefit of CMH lights over HPS bulbs is that they produce less heat. This makes sense, considering the fact that they generate less lumens. Even a 630w CMH light will run cooler than a 600w HPS bulb.
What are the applications of CMH lamps?
Applications for these lamps include shop lighting, street lighting, architectural lighting and agricultural lighting including grow lights. A CMH light was first exhibited by the Thorn Lighting Group in 1981 at the Hannover World Light Fair, and the first commercial CMH lamps were distributed by Philips in 1994.
What is the history of CMH lighting?
A CMH light was first exhibited by the Thorn Lighting Group in 1981 at the Hannover World Light Fair, and the first commercial CMH lamps were distributed by Philips in 1994.
Why choose cd+m Lighting Design Group?
Illuminating our built world. CD+M Lighting Design Group sees vibrant opportunities in the spaces between darkness and light. Our innovative, project-specific lighting solutions create inspiring architectural environments that encourage people and businesses to flourish.
What is a ceramic metal halide (CMH)?
The ceramic metal halide is a variation of the metal-halide lamp which is itself a variation of the old (high-pressure) mercury-vapor lamp. A CMH uses a ceramic arc tube instead of the fused quartz arc tube of a traditional metal halide lamp.