Watt Hqi
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 250 watt HQI 22000K Metal Halide Double Ended Bulb 22K US $32.00 |
 400 watt HQI 20000K Metal Halide Double Ended Bulb 20K US $32.00 |
 250 watt HQI 5500K Metal Halide Double Ended Bulb 5K US $32.00 |
 250 watt HQI 15000K Metal Halide Double Ended Bulb 15K US $32.00 |
 250 watt HQI 20000K Metal Halide Double Ended Bulb 20K US $32.00 |
 250 watt HQI 14000K Metal Halide Double Ended Bulb 14K US $32.00 |
 250 watt HQI 12000K Metal Halide Double Ended Bulb 12K US $32.00 |
 70W 70 watt 8000K HQI DE Metal Halide Light Bulb US $19.99 |
 150W 150 watt 8000K HQI DE Metal Halide Light Bulb US $19.99 |
 175W 175 watt 10K HQI DE Metal Halide Aquarium Bulb US $19.99 |
 150W 150 watt 6500K HQI DE MH Aquarium Bulb Lamp US $19.99 |
 150 W 150 watt HQI 10000K DE MH Bulb Marine Reef 10K US $19.99 |
 3pcs 150W 150 watt 20000K HQI DE MH Aquarium Bulb 20K US $67.00 |
 250W 250 watt HQI 6500K FC2 DE Metal Halide Reef Bulb US $21.00 |
 150W 150 watt 14000K HQI DE Metal Halide Aquarium Bulb US $19.99 |
 2pcs 150W 150 watt 20000K HQI DE MH Aquarium Bulb 20K US $47.00 |
 150 watt 20000K HQI DE Metal Halide Aquarium Bulb M81 US $19.99 |
 2pcs 250W 250 watt HQI 14K FC2 DE Metal Halide Bulb US $49.00 |
 2pcs 250W 250 watt HQI 15K FC2 DE Metal Halide Bulb US $49.00 |
 250 W 250 watt HQI 14000k FC2 MH Bulb Marine Reef 14K US $21.00 |
 2pcs 175W 175 watt 10000K HQI DE MH Reef Aquarium Bulb US $46.00 |
 150W 150 watt 12K HQI DE MH Aquarium Reef Bulb Lamp US $19.99 |
 2pcs 150W 150 watt 14000K HQI DE MH Aquarium Bulb 14K US $47.00 |
 XM 250 watt 10K DE HQI Metal Halide bulb Live Coral US $35.00 |
 70W 70 Watt 14000K Metal Halide Aquarium Bulb HQI DE US $4.59 |
 250 Watt OSRAM HQIT M 80 PNR 250 D Daylight Bulb US $47.90 |
 2pcs MH 150W 150 Watt HQI DE 14K METAL HALIDE REEF BULB US $29.98 |
 2pc MH70W MH 70 WATT HQI DE 14K METAL HALIDE REEF BULB US $29.98 |
 3pcs MH 150W 150 WATT HQI DE 20K METAL HALIDE REEF BULB US $45.00 |
 3pcs MH 150W 150 WATT HQI DE 14K METAL HALIDE REEF BULB US $45.00 |
 2PCS MH 150 WATT 150W DE HQI 20K METAL HALIDE REEF BULB US $29.98 |
 2pc MH 70W 70 WATT HQI DE 20K METAL HALIDE REEF BULB US $29.98 |
 2pcs MH 70W 70 WATT HQI DE 14K METAL HALIDE REEF BULB US $29.98 |
 MH 250W 250 WATT HQI DE 20K METAL HALIDE LAMP REEF BULB US $14.99 |
 MH 250W 250 WATT HQI DE 14K METAL HALIDE LAMP REEF BULB US $14.99 |
 2pc MH 250W 250 WATT HQI DE 20K METAL HALIDE REEF BULB US $29.98 |
 2pc MH 250W 250 WATT HQI DE 14K METAL HALIDE REEF BULB US $29.98 |
 3pc MH 250W 250 WATT HQI DE 14K METAL HALIDE REEF BULB US $45.00 |
 3pc MH 250W 250 WATT HQI DE 20K METAL HALIDE REEF BULB US $45.00 |
 HELIOS 150 WATT 20K DE HQI METAL HALIDE BULB US $74.95 |
 70W 70 WATT 14000K HQI DE Metal Halide Aquarium Bulb US $8.99 |
 Metal Halide Double Ended 70 Watt OEM HQI 20000K US $33.99 |
 Metal Halide Double Ended 70 Watt OEM HQI 10000K US $33.99 |
 Metal Halide Double Ended 250 Watt OEM HQI 20000K US $48.99 |
 Metal Halide Double Ended 250 Watt OEM HQI 10000K US $48.99 |
 Metal Halide Double Ended 150 Watt OEM HQI 20000K US $48.99 |
 Ultra Reef Aquarium Hood 48 4x65 W 2 150 watt HQI US $599.99 |
 Metal Halide Double Ended 400 Watt OEM HQI 20000K US $119.99 |
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