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Ceramic Metal Halide grow lights are basically a variation of MH grow lights with a little of HPS added into the mixture. A CMH uses a ceramic arc tube similar to those used in HPS grow lights instead of the quartz used in traditional metal halide grow lights.
Ceramic discharge metal-halide lamp – Wikipedia
grow lights are basically a variation of MH grow lights with a little of HPS added into the mixture. A CMH uses a ceramic arc tube similar to those used in HPS grow lights instead of the quartz used in traditional metal halide grow lights.
Is CMH or LED better?
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 ceramic lights?
A light bulb that has a “ceramic” color means that it is a solid paint color in which you can not look inside the bulb and see a filament. The opposite of this would be a “transparent” color in which it is painted a color in which you can see inside the lamp.
What’s better CMH or HPS?
HPS bulbs are 30%+ more efficient than MH bulbs but they only have around 3% blue in the spectrum. 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.
Are CMH lights bad for your eyes?
CMH emits large amounts of ultraviolet (UV) light. This stresses plants, making them heartier and triggering production of turpines and THC. However, the effects of UV exposure on humans include cataracts, macular degeneration, pingueculae, pterygia—and skin cancer.
Is CMH good for flowering?
CMH bulbs are great for flowering, too, but not as good as HPS bulbs. They are much better at vegging though, making them the perfect full-cycle bulbs. CMH lamps are generally a bit more expensive than their HPS counterparts, but they make up for it with double the usable lifespan.
Are CMH lights good for growing?
A CMH Grow Light Is a Great Choice for Your Grow Room So there you have it! CMHs offer large coverage at a lower wattage, a wide spectrum of light including UV light, and low power consumption.
What are ceramic LED lights?
Ceramic LED bulbs are used for outdoor applications such as traffic signals or pavement lighting. Ceramic LED bulbs emit less heat than their incandescent counterparts and hence increase energy efficiency of equipment such as freezers and refrigerators.
Why is ceramic used in light bulbs?
A CMH uses ceramic instead of the fused quartz of a traditional metal halide lamp. Ceramic arc tubes allow higher arc tube temperatures, which some manufacturers claim results in better efficacy, color rendering, and color stability. Because of the high wall temperature, the metal halide salts are partly vaporized.
Is ceramic an electrical conductor or insulator?
Most ceramics resist the flow of electric current, and for this reason ceramic materials such as porcelain have traditionally been made into electric insulators. Some ceramics, however, are excellent conductors of electricity.
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.
What is better for growing LED or HPS?
First of all, it is no question that LEDs are more efficient at creating light than an HPS lamp. LEDs will always beat HPS on a light meter… But what we haven’t seen is the definitively better growth performance from LED grow lights, even at wattages that are nearly the same.
What yields more HPS or LEDs?
Higher Yields A 600w HPS light can produce up to 150 to 300 grams in optimal growing environments, which is 0.5 grams per watt or less. LEDs, however, can produce as high as 1 to 1.5 grams per watt. All the while, LEDs use less energy to produce the equivalent HPS wattage.
Do grow lights damage your eyes?
There is no question that any grow light can cause harm to your plants if used improperly. The LED lights are very concentrated and can damage your eyes. This is truer than ever with today’s high power LEDs. Never look directly into LEDs and wear sunglasses.
How far should CMH lights be from plants?
Fluorescent lighting isn’t known for kicking off lots of heat, but they will generate some heat while they run so you’ll need to watch your plants carefully for signs of burning or bleaching. In general, you’ll want to hang your light no more than 12″ away from your plants.
Do CMH lights have UV?
CMH grow lights provide UV (ultra violet) radiation, which although being outside of our range of vision is beneficial (at certain ranges and intensities) to plant growth and development. They produce UV-A, UV-B and UV-C Light, but UV-C is generally very harmful to human eyes.
Is CMH good for veg?
In general, MH and CMH lamps, because their more balanced spectrum and higher emittance of blue wavelengths, have been traditionally used in vegetative growth cycles. This is because the higher blue spectrum limits internode stretching, producing bushier, more compact plants, while also limiting the flowering response.
How much heat do CMH lights produce?
One watt from a grow light creates four British Thermal Units (BTUs) of heat that need to be cooled. So in comparison, one 600w HPS grow light puts off 2,400 BTU ‘s whereas one 315 W CMH grow light puts off only 1,260 BTU’s, which is almost less than half the HPS light.
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.
How much power does a 315 CMH use?
CMH 315 System Specs MSRP $549.95 Wattage 315W Socket Type PZGX18 Input Voltage 120V/240V or 277V* Amperage 2.9A @ 120V.
Can you dim a CMH light?
These days, there are many brands and models of HID (HPS and CDM / CMH) grow lights that have the facility to be dimmed. It tends to be only the cheap ones (with magnetic ballasts) that do not. Nearly all digital ballasts have a control for dimming, and many also have a “boost” function too.
Is Metal Halide good for growing?
Metal Halide (MH) lamps typically emit a white colored light. Traditionally Metal Halide lamps have been used by indoor growers during the vegetative stage of plant growth. They are ideal for growing plants up to the flowering and fruit production stages because they mimic the spring/early summer seasonal sun.
