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 PHOENIX 250 W Watt HQI 14K Metal Halide Reef Coral Bulb $49.99 Time Remaining: 29d 9h 14m Buy It Now for only: $49.99 |
 48 Metal Halide MH T5 Aquarium Light Hood 716W Coral Reef Marine LED 2x 250W $289.00 Time Remaining: 3h 39m Buy It Now for only: $317.95 |
 AQUARIUM LIGHT METAL HALIDE COMPACT 24 36 48 60 72 250 HQI 150 400 WATT $169.99 Time Remaining: 7d 6h 32m Buy It Now for only: $169.99 |
 METAL HALIDE 400 watt MH AQUARIUM LIGHT 14K 14000K w Mirrored Reflector Hood $119.89 Time Remaining: 4h 59m |
 AQUARIUM METAL HALIDE LIGHT 24 36 48 60 72 250 WATT LIGHTING MARINE $359.99 Time Remaining: 3d 5h 50m Buy It Now for only: $359.99 |
 48 ADV PLUS Aquarium Metal Halide 716W Reef Fish Fan $279.99 Time Remaining: 17d 10h 32m Buy It Now for only: $279.99 |
 NEW Coralife Energy Savers 250 Watt 20000k HQI Metal Halide Lamp Bulb $50.00 Time Remaining: 5h 1m Buy It Now for only: $55.00 |
 36 Metal Halide Aquarium Reef Light HQI 406W SPS Lunar $189.99 Time Remaining: 6d 9h 16m Buy It Now for only: $189.99 |
 Lot of 3 Bulbs 250W HQI 22K FC2 DE Metal Halide $71.39 Time Remaining: 8d 9h 41m Buy It Now for only: $71.39 |
 24 346W 4X24W T5 Aquarium Light 250W Metal Halide LED Hood Coral Reef Saltwater $169.95 Time Remaining: 5h 6m Buy It Now for only: $186.95 |
 20000k 150W DE HQI Metal Halide Aquarium Fish Tank Bulb $17.99 Time Remaining: 16d 15h 3m Buy It Now for only: $17.99 |
 250 Watt Metal Halide Electronic Ballast 110V 240V Compatible Aquarium Lighting $84.95 Time Remaining: 5h 55m Buy It Now for only: $93.95 |
 PHOENIX 150 W Watt HQI 14K Metal Halide Reef Coral Bulb $41.99 Time Remaining: 14h 35m Buy It Now for only: $41.99 |
 48 Metal Halide Aquarium Reef Light HQI 716W SPS Lunar $269.99 Time Remaining: 6d 9h 20m Buy It Now for only: $269.99 |
 Pair Metal Halide HQI 400W 10000K DE bulbs Hamilton Tech $30.00 Time Remaining: 12h 18m |
 2pk 250W 250 watt HQI 15K FC2 DE Metal Halide Bulb $48.35 Time Remaining: 8d 7h 40m Buy It Now for only: $48.35 |
 48 AQUARIUM LIGHT METAL HALIDE 500 WATTS 2 X 250 HQI W BULBS LAMP HOOD MOON $214.94 Time Remaining: 5d 6h 20m Buy It Now for only: $214.94 |
 150W Metal Halide Electronic Ballast HQI Aquarium Light 110V to 240V Universal $79.95 Time Remaining: 13h 29m Buy It Now for only: $87.95 |
 48 Metal Halide Light T5 Lighting Aquarium Reef Marine Coral 716W LED Fan Legs $299.00 Time Remaining: 17d 3h 39m Buy It Now for only: $299.00 |
 400W Metal Halide Electronic Ballast HQI Aquarium Light 110V to 240V Universal $99.95 Time Remaining: 13h 37m Buy It Now for only: $109.95 |
 24 Metal Halide Lighting T5 Light Hood Coral Reef Marine MH 346W LED Fan Legs $169.95 Time Remaining: 12d 3h 21m Buy It Now for only: $169.95 |
 400 WATT METAL HALIDE BULB CHOOSE COLOR 10K 14K 20K AQUARIUM LIGHT MARINE $16.99 Time Remaining: 8d 6h 8m Buy It Now for only: $16.99 |
 24 380W Metal Halide PL Lighting Aquarium Light Hood Reef Marine Coral LED $179.95 Time Remaining: 13h 47m Buy It Now for only: $199.95 |
 2pcs 250W 14K Metal halide Aquarium bulb Tshape E39 $35.10 Time Remaining: 12d 6h 56m Buy It Now for only: $35.10 |
 72 AQUARIUM LIGHT METAL HALIDE COMPACT AQUARIUM LIGHT W LED LUNAR MOON LIGHTS $489.99 Time Remaining: 15d 11h 9m Buy It Now for only: $489.99 |
 PFO 150 HQI w moonlight and new electronic ballast reef light metal halide $134.99 Time Remaining: 14h 23m Buy It Now for only: $159.99 |
 400W HQI 14000K DE Fc2 Metal Halide Bulb for Reef Setup $29.93 Time Remaining: 8d 10h 44m Buy It Now for only: $29.93 |
 48 760 Watt 2x250 Metal Halide Aquarium Light Compact Saltwater German Reflector $299.90 Time Remaining: 22d 15h 23m Buy It Now for only: $299.90 |
 Elos Aquaplanet Metal Halide Reef Aquarium Light $549.99 Time Remaining: 14h 25m Buy It Now for only: $629.99 |
 250 Watts Metal Halide Bulb HQI SPS 15000K 15K DE FC2 $10.95 Time Remaining: 18d 2h 54m Buy It Now for only: $10.95 |
 48 500W 15000K Metal Halide Aquarium Light Reef 2x 250 HQI Moon LED Coral $219.95 (1 Bid) Time Remaining: 14h 58m |
 72 METAL HALIDE T5 HO AQUARIUM LIGHT LUNAR MOON MOONLIGHTS MARINE REEF NEW $479.99 Time Remaining: 15d 5h 25m Buy It Now for only: $479.99 |
 2pcs 250 watt HQI 14000K FC2 DE Metal Halide Bulb $46.20 Time Remaining: 2d 8h 16m Buy It Now for only: $46.20 |
 48 760W Metal Halide Aquarium Light HQIi PL 4x65 2X250 Marine Reef LEDs Actinic $299.95 Time Remaining: 15h 2m Buy It Now for only: $331.95 |
 2pcs MH175W MH 175 WATT 14K METAL HALIDE REEF BULB $44.95 Time Remaining: 3d 14h 21m Buy It Now for only: $44.95 |
 250 WATT METAL HALIDE BULB CHOOSE COLOR 10K 14K 20K AQUARIUM LIGHTING LIGHT $14.99 Time Remaining: 8d 6h 33m Buy It Now for only: $14.99 |
 60 1072W Aquarium 3x250 Metal Halide Light HQI Compact PL Actinic Hood Moon LED $459.95 Time Remaining: 15h 2m Buy It Now for only: $505.95 |
 250 Watt Metal Halide Electronic Ballast 110V 240V Compatible Aquarium Lighting $84.90 Time Remaining: 10d 14h 47m Buy It Now for only: $84.90 |
 3x250W HQI Metal Halide 72 1134W Aquarium Compact Light Actinic Lunar LED Hood $499.95 Time Remaining: 15h 6m Buy It Now for only: $552.95 |
 24 Metal Halide T5 HO Light Aquarium Reef Marine Hood 298W LED 250W Bulb 2x 24W $149.95 Time Remaining: 23d 3h 50m Buy It Now for only: $149.95 |
 48 760W Metal Halide Aquarium Light HQIi PL 4x65 2X250 Marine Reef LEDs Actinic $299.90 Time Remaining: 22d 15h 23m Buy It Now for only: $299.90 |
 48 Metal Halide MH T5 Aquarium Light Hood 716W Coral Reef Marine LED 2x 250W $289.00 (1 Bid) Time Remaining: 1d 3h 37m |
 250 Watts Metal Halide Bulb HQI 20000 K 20K FC2 DE Lamp $9.95 Time Remaining: 3d 13h 39m Buy It Now for only: $9.95 |
 2x 150 watts Metal Halide Bulb HQI Coral Reef 15000K DE $29.99 Time Remaining: 7d 8h 59m Buy It Now for only: $29.99 |
 24 380W Metal Halide PL Lighting Aquarium Light Hood Reef Marine Coral LED $179.95 Time Remaining: 1d 5h 42m Buy It Now for only: $199.95 |
 150 HQI METAL HALIDE AQUARIUM LIGHT CLAMP LIGHT FISH W MOON LIGHTS LUNAR $199.95 Time Remaining: 9h 13m Buy It Now for only: $199.95 |
 60 1072W Aquarium 3x250 Metal Halide Light HQI Compact PL Actinic Hood Moon LED $459.95 Time Remaining: 1d 5h 44m Buy It Now for only: $505.95 |
 48 Metal Halide 2x 250 Aquarium Light 500 watt Reef $223.98 Time Remaining: 24d 12h 38m Buy It Now for only: $223.98 |
 OPEN BOX PHOENIX 150 W Watt HQI 14K Metal Halide Reef Coral Bulb Aquarium $29.99 Time Remaining: 28d 9h 43m Buy It Now for only: $29.99 |
 48 500W 15000K Metal Halide Aquarium Light Reef 2x 250 HQI Moon LED Coral $219.95 Time Remaining: 1d 6h 41m Buy It Now for only: $241.95 |
 250W SE Mogul 12000K Metal Halide Aquarium Light 12K $22.00 Time Remaining: 20d 3h 15m Buy It Now for only: $22.00 |
 150W Metal Halide HQI Lamp Aquarium Tank Bulb HQI Light 140K $9.49 Time Remaining: 9d 14h 30m Buy It Now for only: $9.49 |
 150W Metal Halide Electronic Ballast HQI Aquarium Light 110V to 240V Universal $79.95 Time Remaining: 1d 8h 30m Buy It Now for only: $87.95 |
 2x 150W 20000K Metal Halide HQI Bulb Double End DE FS $29.99 Time Remaining: 20d 10h 48m Buy It Now for only: $29.99 |
 150W Metal DE Halide Lamp Aquarium Tank Bulb HQI Light $9.99 Time Remaining: 29d 3h 8m Buy It Now for only: $9.99 |
 250 Watt Metal Halide Electronic Ballast 110V 240V Compatible Aquarium Lighting $84.95 Time Remaining: 1d 8h 34m Buy It Now for only: $93.95 |
 3x250W Metal Halide 4x96W PL 72 1134W Aquarium Light Hood Reef Coral LEDs Fans $499.90 Time Remaining: 25d 15h 15m Buy It Now for only: $499.90 |
 24 346W 4X24W T5 Aquarium Light 250W Metal Halide LED Hood Coral Reef Saltwater $169.95 Time Remaining: 1d 8h 41m Buy It Now for only: $186.95 |
 2 175W 20K Metal Halide Aquarium bulb Lamp Tshape E39 $35.50 Time Remaining: 12d 6h 40m Buy It Now for only: $35.50 |
 24 380W Metal Halide PL Lighting Aquarium Light Hood Reef Marine Coral LED $179.90 Time Remaining: 22d 15h 7m Buy It Now for only: $179.90 |
 250 Watt SPS Metal Halide Bulb 20000k Blue Life HQI Mogul Socket $39.99 Time Remaining: 1d 9h 31m Buy It Now for only: $60.00 |
 MH 250W 250 WATT HQI DE 10K METAL HALIDE LAMP REEF BULB $24.95 Time Remaining: 10d 3h 38m Buy It Now for only: $24.95 |
 2pk Set 175W 14000K HID Metal Halide Aquarium Bulbs $49.30 Time Remaining: 29d 13h 25m Buy It Now for only: $49.30 |
 Hamilton 175w 14k metal halide bulbs $25.00 Time Remaining: 1d 13h 3m |
 24 METAL HALIDE LIGHT 250 + 4X 24 T5 HO AQUARIUM LIGHTING NEW FIXTURE W BULBS $149.99 Time Remaining: 3d 6h 3m Buy It Now for only: $149.99 |
 Hamilton 175w 14k metal halide bulbs $25.00 Time Remaining: 1d 13h 4m |
 36 Metal Halide Power Compact Aquarium Light 342 watt $219.99 Time Remaining: 17d 5h 19m Buy It Now for only: $219.99 |
 2pcs 250 watt HQI 20000K FC2 DE Metal Halide Bulb $46.20 Time Remaining: 2d 8h 16m Buy It Now for only: $46.20 |
 Hamilton 175w 10k metal halide bulbs $25.00 Time Remaining: 1d 13h 5m |
 150 HQI METAL HALIDE BULB CHOOSE COLOR 10K 14K 20K AQUARIUM LIGHT LIGHITNG $12.99 Time Remaining: 2d 6h 10m Buy It Now for only: $12.99 |
 48 2X 250W HQI Metal Halide Aquarium Light Reef Coral $219.90 Time Remaining: 8h 49m Buy It Now for only: $219.90 |
 Hamilton 250w 14k metal halide bulbs $25.00 Time Remaining: 1d 13h 10m |
 Metal Halide DIY Reef Retro Retrofit 250W HQI Pendant $44.95 Time Remaining: 4d 23h 26m Buy It Now for only: $44.95 |
 400W Metal Halide Electronic Ballast HQI Aquarium Light 110V to 240V Universal $99.95 Time Remaining: 1d 16h 6m Buy It Now for only: $109.95 |
 2pk Lot 175W 14K Spectrum Metal Halide Reef Bulbs $50.34 Time Remaining: 29d 13h 25m Buy It Now for only: $50.34 |
 250 Watt Metal Halide Aquarium Light w 14k or 20k Lamp $75.00 Time Remaining: 1d 11h 13m Buy It Now for only: $75.00 |
 Coralife 150w watt Clip on Metal Halide lighting 20k bulb with ballast $51.00 (9 Bids) Time Remaining: 1d 17h 2m |
 24 346W 4X24W T5 Aquarium Light 250W Metal Halide LED Hood Coral Reef Saltwater $169.90 Time Remaining: 9d 15h 33m Buy It Now for only: $169.90 |
 Metal Halide Bulb HQI 250 Watts 10000K 10K FC2 DE Lamp Coral Reef Daylight $10.95 Time Remaining: 27d 2h 7m Buy It Now for only: $10.95 |
 LOTS OF 5 MARINE COLOR 250W FC2 DE METAL HALIDE BULB $99.99 Time Remaining: 1d 20h 47m |
 2 Double Ended 150W 20K Metal Halide Aquarium bulb R7S $25.20 Time Remaining: 12d 6h 40m Buy It Now for only: $25.20 |
 24 Metal Halide T5 Lighting Coral Reef Marine 250W Light Bulb LED Fan Legs 346W $179.95 Time Remaining: 21d 1h 10m Buy It Now for only: $179.95 |
 LOTS OF 10 MARINE COLOR HQI 150W METAL HALIDE BULBS $99.99 Time Remaining: 1d 21h 2m |
 48 500 Watt Metal Halide Aquarium Light Reef 2x 250 $219.90 Time Remaining: 5h 55m Buy It Now for only: $219.90 |
 LOTS OF 3 MARINE COLOR 250W SE METAL HALIDE BULB HQI $59.99 Time Remaining: 1d 21h 24m |
 150W 20K HQI Metal Halide Bulb Lamp Reef $17.50 Time Remaining: 4h 39m Buy It Now for only: $17.50 |
 175W 175 WATT 14K METAL HALIDE AQUARIUM LAMP REEF BULB $24.95 Time Remaining: 3d 15h 5m Buy It Now for only: $24.95 |
 LOTS OF 5 MARINE COLOR HQI 70W METAL HALIDE BULBS $69.99 Time Remaining: 1d 21h 38m |
 Mounting Legs Bracket Odyssea Metal Halide MH Light $12.95 Time Remaining: 13d 7h 12m Buy It Now for only: $12.95 |
 Radium 2 x 250 watt SE 20000K Bulb Metal Halide $150.00 Time Remaining: 4d 9h 50m Buy It Now for only: $150.00 |
 LOTS OF 5 MARINE COLOR HQI 150W METAL HALIDE BULBS $69.99 Time Remaining: 1d 23h 12m |
 250W 22000K 22K Metal Halide Super Blue Aquarium Bulb $25.73 Time Remaining: 29d 12h 58m Buy It Now for only: $25.73 |
 24 346W 4X24W T5 Aquarium Light 250W Metal Halide LED Hood Coral Reef Saltwater $169.95 Time Remaining: 2d 4h 42m Buy It Now for only: $186.95 |
 400W 400 WATT 20K METAL HALIDE AQUARIUM LAMP REEF BULB $24.95 Time Remaining: 19d 8h 37m Buy It Now for only: $24.95 |
 2x 250W 15000K Metal Halide HQI Bulb Double End DE SALE $29.99 Time Remaining: 10d 7h 16m Buy It Now for only: $29.99 |
 48 AQUARIUM LIGHT METAL HALIDE 300 WATTS 2 X 150 HQI BULBS LUNAR LIGHTING $199.99 Time Remaining: 2d 4h 44m Buy It Now for only: $219.99 |
 CURRENT USA OUTER 0RBIT 150 HQI METAL HALIDE+PCCORAL REEF TANK1 2 OFF SHIPPING $149.99 Time Remaining: 25d 13h 3m Buy It Now for only: $149.99 |
 2pcs 250W 20K Metal halide Aquarium bulb Tshape E39 $35.10 Time Remaining: 12d 6h 56m Buy It Now for only: $35.10 |
 60 1072W Aquarium 3x250 Metal Halide Light HQI Compact PL Actinic Hood Moon LED $459.95 Time Remaining: 2d 5h 14m Buy It Now for only: $505.95 |
 Aquarium Bulb 250W HQI 20Kelvin FC2 Metal Halide HID $20.84 Time Remaining: 29d 12h 55m Buy It Now for only: $20.84 |
Metal Halide
What Every Indoor Gardener Should Know About Metal Halide Grow Lights
Metal halide grow lights create fantastic light under which your plants will thrive. These grow lights are a HID, or high-intensity discharge, light. They are small grow lamps that produce a lot of light, and yet are more efficient to run than either incandescent or fluorescent light bulbs. Indoor gardeners and hydroponics enthusiasts get great results with their plants when they use metal halide lights.
Metal halide lamps are made up of several different parts. There are tungsten electrodes which are connected to a quartz arc tube, where the light is produced. Inside the arc tube is where you will find mercury vapor, different metals and noble gas, all of which play a part in creating the light produced by MH grow lights. The arc tube is covered by a glass bulb. There is a metal base, and a connection to the power source. Some metal halide grow lights use an arc tube made of alumina or aluminum oxide, as well. This type of grow light requires the use of a ballast to control the flow of the current through the arc tube in order for the grow lamp to function properly.
Each different type of grow light has a particular color-rendering index and correlated color temperature. This is true of the metal halide grow lights. Some of these lamps have an 80 color-rendering index, on a scale of zero to 100. This index ranks lights to show how well or poorly they reproduce colors of objects being lit by the lamp.
100 is the best rating, and zero the worst. Therefore, an 80 is reflective of a very good quality white light. In terms of correlated color temperature, MH grow lights can range from 3,000 K to 20,000 K. 3,000 is in the yellow range of the spectrum, while 20,000 is in the blue range. (K refers to the Kelvin temperature scale.) In terms of comparison, daylight registers in at 6,500 K, whereas a television screen is at 9,300 K and moonlight is at 4,100 K. If you are an indoor gardener, you are trying to recreate daylight in order for your plants to thrive, so you will want a bulb as close to daylight's 6,500 K as possible.
Light produced by a grow lamp can fall at different spots on the electromagnetic spectrum. Some lights lean more toward the blue end of spectrum, while others land on the orange and red end. This matters to the indoor gardener, because baby plants need light in the blue spectrum in order to grow well. If you want a mature plant to produce fruit or flowers, then you will need lights in the red and orange spectrum.
About the Author
Susan Slobac has enjoyed hydroponics gardening for years now, and has experimented with numerous types of grow lamps. She's had great success using metal halide grow lights for her indoor gardening at home and as part of her local gardening club.
How far from my plants should my 400w Metal Halide light be?
growing strawberries and green chiles, want to make sure i dont burn the little guys. Whats a safe distance?
quixdraw your an idiot
consistently 18 inches
400w Metal Halide Grow 7th Week Bloom
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