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InsightHorizon Digest

How long do MH bulbs last

Author

Isabella Harris

Updated on April 11, 2026

1000W MH lamps are rated for a life of around 11,000 hours. So in keeping in the characteristics of metal halide they would produce the light output of a 400 WMH lamp in roughly 5,000 to 6,000 hours of use.

How can you tell if a metal halide bulb is bad?

Usually the lamps will gain a pinkish hue when compared to other lamps in the same system. This is caused when metal vapors in the lamp are expired from heat or burning, and the lack of a particular mixture in the arc tube renders a different color.

Do metal halide bulbs wear out?

In fact, after 20,000 hours of use, an MH bulb will have depreciated twice as much as an HPS bulb. If you use MH bulbs, plan to replace them after 6-10 months of continuous use.

When should I replace my MH bulb?

MH (Metal Halide) bulbs need to be replaced every 8 months on a 18 hour on 6 hour off cycle. MH bulbs lose 40% output in a year, so you lose around 40% yield. Problems like the light going on & off with power outages make the life of the bulb even shorter.

How long do metal halide bulbs last?

Metal Halide lights have an better lifespan relative to old technology like incandescent lights but they have a short lifespan compared to LED. Typical lifespan values range from 6,000 hours to 15,000 hours before a bulb requires replacement.

Can you touch metal halide bulb?

The oils and etc on your hands can get on the bulb. This can cause etching and hot spots on the bulb that can cause issues. f you do touch it just wipe the bulb down with some rubbing alcohol on a napkin or paper towel or something…. I have heard this when talking about HALOGEN bulbs, for the reason stated above.

What's better HPS or metal halide?

HPS is about twice as electrically efficient as metal halide. Photosynthetically Active Radiation (PAR) is what really matters to plant growth, and delivery of usable PAR is better with HPS than metal halide. … Metal halides deliver, on average, about 80,000-110,000 lumens per standard 1,000-watt bulb.

How long does a 600w HPS last?

High Pressure Sodium bulbs have a rated life of 24,000 hours. One year is 8,760 hours. It is, however, suggested that people using HPS bulbs for growing plants should replace their bulb after about 18 months of use.

Is it okay to put a 600w bulb in a 1000w ballast?

Using it to dim down a bulb, for example to run a 1000w watt bulb at 600w, is not ideal. … The better use is to dim the ballast down to 600w and then use it to run an actual 600w bulb. That is the big advantage of a dimmable ballast: it allows you to power bulbs of multiple wattages.

How long do double ended bulbs last?

Double-ended HPS lamps retain over 90% of their output after 10,000 hours of use, allowing you to replace your lamps less frequently.

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When should I replace my grow lights?

To balance economy and performance, these lamps can be replaced every 12-18 months. Note: the above suggestions re grow lamp replacements assume an average of 12 ON hours per 24 hour period, so running them 18-to 24 hours a day further decreases suggested time between replacement.

What's the difference between mercury vapor and metal halide?

Mercury Vapor (MV) lamps are most frequently used outside for parking and security lighting. … Metal Halide (MH) lamps provide the best color rendering of all HID lamps; color rendition is almost as full spectrum incandescents.

Are metal halide bulbs expensive to run?

At an average cost of 0.09 cents per kilowatt, a system of 1,000 400-watt Metal Halide fixtures costs $41.22 per hour. If the fixtures run an average of 730 hours every month (730 x $41.22), it ends up costing $30,090.60 every month or $30.09 per month in energy per fixture.

Can LED replace metal halide?

LED Offers Long Life, Lower Energy Costs, Instant On and Control Options. … A 400 watt metal halide bulb can be replaced with a 200 watt LED. A 100 watt metal halide can be replaced with a 50 watt LED. Implementing an LED replacement program should result in a 50% reduction in annual energy use (kWh) costs.

Is metal halide same as halogen?

The key difference between halogen and metal halide is that a halogen is a group 17 chemical element, whereas metal halide is a compound containing a metal and a halogen. Metal halides are ionic or covalent compounds of halogens.

Is MH good for veg?

MH grow lights (metal halide) are suited best for vegetative growth and HPS grow lights are superior for flowering.

What is MH Growlight?

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.

What is metallic halide?

Metal halides are compounds between metals and halogens. … Some, such as sodium chloride are ionic, while others are covalently bonded. A few metal halides are discrete molecules, such as uranium hexafluoride, but most adopt polymeric structures, such as palladium chloride.

Why do metal halide bulbs explode?

Metal halide (MH) lamps can explode (typically referred to as sudden nonpassive failure) because they operate at high pressures, but some products are manufactured with safety features to prevent injury. … Some MH lamps are self-extinguishing-they will automatically extinguish if the outer envelope is broken.

What is a metal halide bulb used for?

Metal-halide lamps are used for general lighting purposes both indoors and outdoors, such as commercial, industrial, and public spaces, parking lots, sports arenas, factories, and retail stores, as well as residential security lighting; automotive and specialty applications are further fields of usage.

What are the signs of a bad ballast?

  • Buzzing. If you hear a strange sound coming from your bulbs or light fixture, like a buzzing or humming noise, that’s often a sign your ballast is going. …
  • Dimming or flickering. …
  • No lights at all. …
  • Changing colors. …
  • Swollen casing. …
  • Burn marks. …
  • Water damage. …
  • Leaking oil.

How long does a 600W ballast last?

For optimum efficiency, you should replace your magnetic ballast every 2-3 years.

Can you dim a MH bulb?

METAL HALIDE OPERATED ON DIMMING BALLASTS All EYE Metal Halide lamps, except, Multi-Metal Ace™ family, can be dimmed up to 65% of the lamp nominal wattage on EYE Lighting approved dimming ballast systems. Lamps must be operated at least15 minutes at full power prior to dimming.

Are double ended grow lights better?

Benefits of Double Ended Grow Lights Double-ended grow lights are, without a doubt, the go-to solution for commercial growers. The light emitted is more powerful and distributed more evenly. DE lights produce up to 30% more intense light than their SE counterparts, but the spectrum is more ideal as well.

Is HPS better than LED?

LEDs are much the same. Though they’re generally more efficient than HPS (with some clocking 2.8 µmol/joule), some LEDs are less efficient than high-quality HPS fixtures, and they give you less light. … All too often, the µmol/joule rating on HPS products states the lamp efficiency, not the actual product efficiency.

What is the best 600 watt HPS bulb?

ProductDetailsOur Top PickUshio HPS LampBest Value Optimized for floweringCheck Price ->Digilux HPSBest Quality More ExpensiveCheck Price ->Eye Hortilux HPS25% more blue light 1 year warrantyCheck Price ->PlantmaxInexpensive Option Slightly less outputCheck Price ->

How often should I change my 600W HPS bulb?

Of course each lamp is different. But on average, you should use each lamp no more than: 4000 – 5000 hours (HPS) 3000-4000 hours (CDM)

Why are double-ended HPS better?

Stronger Light Intensity: Double-ended HPS grow lights can withhold much higher heat than single-ended lights. This means you’ll be able to heat them to higher temperatures in order to produce a lot more light.

Do grow lights wear out?

Most LED lights have an expected lifespan rated at somewhere between 50,000 and 100,000 hours of use. In comparison, many other grow lights tend to last for around 20,000 hours before needing to be replaced.

What is a double-ended bulb?

Double-ended (DE) HPS bulbs connect to the fixture on each end much like fluorescent tube bulbs. … Exposing the arc tube to the bulb without any metal framing in the way increases light delivery to the canopy of your plants.

Do LED grow lights degrade over time?

For LED grow lights, rated lamp life indicates the point at which the light emits 70% of its original lumen output. While HID bulbs burn out, LEDs simply degrade very slowly over several years. In other words, an LED lamp may still be operational without supplying the light quality your plants require.