metal halide HQI

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Aquarium Advice Apprentice
Feb 28, 2007
Does anyone know the difference between HQI and regular MH bulbs other than HQI is double ended? Also, how much light is produced in an HQI 150 w bulb. Is more light produced in a 150w HQI than a standard 175 w MH bulb?

Lastly, does anyone have the coralife Aqualight pro lighting system? If so how would you rate it?
HQI stands for High Quartz Iodide. and unlike a standard mogul base bulb they need a UV absorbing glass lens in front of them to protect your critters from the harmful UV rays. a standard halide bulb is already encased in protective glass.

I dont know but i think a 175w bulb would be a little brighter than a 150w.
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