Watt Hqi
Tuesday, December 1st, 2009
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 AQUAMAXX 250 WATT HQI 14K REEF AQUARIUM METAL HALIDE US $69.95 |
 AQUAMAXX 150 WATT HQI 14K REEF AQUARIUM METAL HALIDE US $59.95 |
 XM 150 WATT HQI REEF AQUARIUM METAL HALIDE 10K 15K 20K US $69.95 |
 400 watt HQI 14000K Metal Halide Double Ended Bulb US $34.24 |
 400 watt HQI 10000K Metal Halide Double Ended Bulb US $34.24 |
 2pcs 175W 175 watt 20000K HQI DE MH Reef Aquarium Bulb US $48.30 |
 70W 70 watt 5700K HQI DE Metal Halide Light Bulb US $20.99 |
 Lot of 2 Bulbs 70Watt 20000K HQI DE MH for Corals US $41.95 |
 70W 70 watt 8000K HQI DE Metal Halide Light Bulb US $20.99 |
 150W 150 watt 5700K HQI DE Metal Halide Light Bulb US $20.99 |
 150W 150 watt 8000K HQI DE Metal Halide Light Bulb US $20.99 |
 175W 175 watt 8000K HQI DE Metal Halide Light Bulb US $20.99 |
 250W 250 watt HQI 5700K DE Plant Grow Metal Halide Bulb US $22.05 |
 250W 250 watt HQI 8000K DE Plant Grow Metal Halide Bulb US $22.05 |
 XM 150 watt 20K DE HQI Metal Halide US $45.00 |
 ReefStar 400 Watt HQI Pendant Reflectors Two Units New US $119.00 |
 ReefStar 150 Watt HQI Pendant Reflectors Two Units New US $99.95 |
 3pcs 150W 150 watt 14000K HQI DE MH Aquarium Bulb 14K US $69.65 |
 MHDE 150W watt HQI HID Bulb Aquarium MH 20000K UV Stop US $20.79 |
 3pcs 250W 250 watt HQI 6500K FC2 DE MH Reef Bulb Lamp US $65.49 |
 250W 250 watt HQI 20K FC2 DE Metal Halide Aquarium Bulb US $21.83 |
 150W watt HQI 6500k Metal Halide DE for Growing Needs US $20.78 |
 250W 250 watt HQI 20000K DE MH Light Bulb Marine Reef US $21.83 |
 4pcs 250W 250 watt HQI 6500K FC2 DE MH Reef Bulb Lamp US $86.28 |
 250 Watt MHDE HQI Fc2 Lamp For Marine Reef Setups US $21.83 |
 250W WATT HQI 14k FC2 Metal Halide Lamp M80 Ballast US $21.59 |
 MH 175 watt 6500K HQI DE Double Ended Reef Lamp US $20.42 |
 MH150 Watt MH HID HQI Lamp 14000K White with 10 Blue US $20.78 |
 Reef 150W watt HQI Lamp Aquarium MH 20000K 5 1 4 Long US $20.77 |
 3pcs 70W 70 watt 20000K HQI DE MH Aquarium Bulb 20K US $68.61 |
 2pcs 70W 70 watt 20000K HQI DE MH Aquarium Bulb 20K US $47.82 |
 Aqua Lamp 150Watt MH HID HQI 14K White with 10 Blue US $20.78 |
 150W 150 watt 12K HQI DE MH Aquarium Reef Bulb Lamp US $20.78 |
 JBJ K 2 Viper Deluxe HQI Clamp On Lamp 250 Watt US $279.99 |
 70 Watt HQI Double Ended Metal Halide Reflector US $39.95 |
 CORA LIFE AQUALIGHT 150WATT HQI METAL HALIDE BALLAST US $40.00 |
 150 WATT HQI BALLAST BY CORA LIFE AQUA LIGHT US $40.00 |
 Reeflux Double Ended HQI Bulb 150watt 12000K US $62.99 |
 70Watt 120V 220V 14K HQI DE DoubleEnded T6 RX7S Base US $21.01 |
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