Watt Hqi
Tuesday, December 1st, 2009
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 70 Watt Double Ended HQI Metal Halide Retrofit Kit US $99.95 |
 Aquarium Metal Halide HQI Bulb 150 Watt 12K UV Stop US $20.78 |
 XM 250 Watt 20K Metal Halide HQI DE Reef 250W NEW US $74.95 |
 Aqualine 10000 250watt 13000K Metal Halide Bulb HQI DE US $89.95 |
 XM 250 Watt 10K Metal Halide HQI DE Reef 250W NEW US $74.95 |
 Ushio 250 Watt 14K Metal Halide HQI Reef Aqualite DE US $67.95 |
 Aqualine 10000 150watt 20000K Metal Halide Bulb HQI DE US $89.95 |
 Ushio 250 Watt 10K Metal Halide HQI Reef Aqualite DE US $67.95 |
 Reeflux 150 Watt 12K Metal Halide HQI Reef Lighting DE US $59.95 |
 Ushio 250 Watt 20K Metal Halide HQI Reef Aqualite DE US $67.95 |
 Ushio 150 Watt 10K Metal Halide HQI Reef DE Aqualite US $55.95 |
 Reeflux 250 Watt 12K Metal Halide HQI Reef Lighting DE US $64.95 |
 Aqualine 10000 150watt 13000K Metal Halide Bulb HQI DE US $79.95 |
 Ushio 150 Watt 14K Metal Halide Bulb HQI Reef Aqualite US $55.95 |
 Reeflux 150 Watt 10K Metal Halide HQI Reef Lighting DE US $59.95 |
 Reeflux Double Ended HQI Lamp 250 Watt 12000K US $74.99 |
 250 Watt DE HQI Reeflux True 10K Coralvue Bulb 250W US $77.95 |
 250W 10K CoralVue HQI DE Reef Bulb 250 Watt US $63.95 |
 150 Watt DE HQI Reeflux True 12K Coralvue Bulb 150W US $64.95 |
 250W 14K CoralVue HQI DE Reef Bulb 250 Watt US $63.95 |
 150W 14K CoralVue HQI DE Reef Bulb 150 Watt US $55.95 |
 150W 10K CoralVue HQI DE Reef Bulb 150 Watt US $55.95 |
 250W 20K CoralVue HQI DE Reef Bulb 250 Watt US $63.95 |
 150 Watt DE HQI Reeflux True 10K Coralvue Bulb 150W US $63.95 |
 Lot of 2 Bulbs for Aquarium DE 175Watt HQI 12000K 12K US $47.82 |
 250W 250 watt HQI 10k FC2 Metal Halide Bulb Marine Reef US $21.83 |
 Reef Aquarium Lighting Bulb 175Watt MH HQI DE 15K US $20.78 |
 150 watt HQI Double Ended 12000K 120V 220V MH Bulb US $20.78 |
 175W 175 watt 10000K HQI DE MH Aquarium Bulb Lamp US $20.78 |
 70W 70 WATT 10K HQI DE Metal Halide Aquarium Bulb Lamp US $20.78 |
 250W 250 watt HQI 15000K FC2 DE MH Aquarium Bulb US $23.91 |
 3pcs 250W 250 watt HQI 14K FC2 DE Metal Halide Bulb US $72.77 |
 Light Bulb for Aquarium DE 175Watt HQI 12000K MHDE US $20.76 |
 250W 250 watt HQI 14k FC2 Metal Halide Light Bulb US $21.83 |
 22000K Spectrum 150Watt HQI DE T7 RX7S Base Bulb US $20.78 |
 250 Watt HQI 20000k FC2 Metal Halide Bulb Marine Reef US $21.83 |
Is 150 watts HQI enought for corals on a 55 gallon tank?
150 watt halide will be enough to light a tank that deep, but you will need more than one. A single metal halide light is good to cover 2 square feet, and being that a 55 gallon is 4 feet long, you will need 2.
What Are Metal Halide Lamps (HQI)?
Metal Halide Lamps are high pressure, high intensity gas discharge lamps. They are much more efficient than fluorescent and incandescent bulbs and have a higher luminous efficacy i.e. roughly a quarter of the energy used by them produces actual light (up to 100 lumens per watt ) / a much greater proportion of their radiation is light rather than heat compared to other types of bulbs. For example, traditional incandescent bulbs give out 95% as heat.
Metal Halide lamps usually consist of a fused quartz arc tube that contains a pressurized mixture of a noble gas (argon), mercury, and metal halides. Light is produced within the arc tube when the electric current is passed through this mixture of ionized gasses. Electrons collide with the metal atoms and gas, ultraviolet radiation is produced and then converted to visible light by the fluorescent coated inner surface of the lamp, and pressure is increased within the lamp as the reactions take place. They can produce very clear white light, or coloured light – the colours come for the mixture of metals used and the wavelength emissions from the gases.
Due to the pressurized structure and the UV radiation production, many metal halide lamps have a protective outer tube. Despite a more complicated manufacturing process to produce these lamps, they typically have a long life, during which they are highly efficient.
The high intensity and extreme brightness of these lamps means that they have many commercial applications where strong lighting is needed over large outdoor areas e.g. car parks, warehouse, football stadiums etc, or in retail settings. Their superior brightness has also led them to be used in more modern car headlamps, bicycle lamps and torches. Metal Halide lamps are particularly suitable for use in aquariums or for indoor gardening.
For larger lamps e.g. in public or commercial settings, because of the pressurized nature of the bulbs, it’s a good idea to have them inspected before installation, given adequate shutdown time if in continuous operation, and make sure they’re replaced before they reach the end of their life.
There are High Quality very reasonably priced range of Commercial Metal Halide lamps, and Metal Halide DE 70w & 150w lamps.
About the Author
Art Icklewright is an author specialising in lighting and light bulbs of all kind including low energy light bulbs, energy saving light bulbs and G9 bulbs.
Hamilton Technology - 150 watt 14K HQI Reefstar & LED Lights