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Old 03-11-2011, 02:01 AM
Reefpins10 Reefpins10 is offline
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Wow, thank you asmodeus, I will contact the hobbylighting right now and see if they still have Artemis bulbs.
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Old 03-11-2011, 08:33 PM
ALang ALang is offline
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So...has anybody any idea as to how long these bulbs will fire up within the acceptable spectrum/range? How often should these bulbs be changed out? Does anyone know how often Dez changes his out?
I agree, though, with $20/bulb, even with a 6-month change-out, that's still a great deal. Usually these bulbs cost me >$100/pc
So anyone has a preference who to order from? I kind of leaning towards the Canadian site (Hobby Lighting).
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Old 03-11-2011, 11:18 PM
George George is offline
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Quote:
Originally Posted by ALang View Post
So...has anybody any idea as to how long these bulbs will fire up within the acceptable spectrum/range? How often should these bulbs be changed out? Does anyone know how often Dez changes his out?
I agree, though, with $20/bulb, even with a 6-month change-out, that's still a great deal. Usually these bulbs cost me >$100/pc
So anyone has a preference who to order from? I kind of leaning towards the Canadian site (Hobby Lighting).
It's not that easy to measure spectrum since you need a spectroradiometer to do it properly and that device is not cheap. If any one knows how to measure spectrum cheaply (a local lab maybe?) let me know.
However, you can measure intensity of a bulb relatively low cost by using something like an apogee light (quantum) meter.
I recently acquired some ebay MH light bulbs and an apogee light meter. I will do some tests to see what is the deal with these ebay light bulbs. So stay tuned.

George
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Old 03-11-2011, 11:23 PM
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Dez Dez is offline
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I have been changing my bulbs once per year. My corals have not noticed it and I haven't had any algae blooms. Although my bulbs aren't from eBay. My friend brought a bunch in from somewhere. They were $13/ bulb. Not sure where he got them.

Last edited by Dez; 03-11-2011 at 11:30 PM.
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Old 03-11-2011, 11:35 PM
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Skimmerking Skimmerking is offline
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Quote:
Originally Posted by Dez View Post
I have been changing my bulbs once per year. My corals have not noticed it and I haven't had any algae blooms. Although my bulbs aren't from eBay. My friend brought a bunch in from somewhere. They were $13/ bulb. Not sure where he got them.
well find out dez DUHHhhhhhh
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