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Old 04-19-2011, 12:56 PM   #11
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Right on the money
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Old 04-19-2011, 01:12 PM   #12
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Lighting is the one part of this whole aquatic world that I do not really understand,....I understand pumps,water,filters,skimmers etc,..but lights? I haven't a clue,...when I got my current lighting outfit,...I was advise by the sellers to get two blue bulbs ,a ac sun bulb and a 454 bulb,....they might as well been talking in Greek ,... I'm hoping that I eventually can pick up on some knowledge here and maybe somewhere down the line maybe get to the point that I could actually advise someone else,...but for now,...I'm all ears!!!
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Old 04-19-2011, 01:18 PM   #13
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It is defenetly a toss up between lighting and water chemistry for me. But I find as I keep reading posts I understand more and more
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Old 04-19-2011, 04:14 PM   #14
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Different bulbs age differently. The spectrum shifts, usually to the red part of the spectrum, the part corals could care less about. It is why I love LED lighting, they stay relatively flat until they burn out. Unfortunately, your eye cannot see this slow shift, but your corals can. The only solution is a regular bulb change and that's hard to make yourself do because the bulb visually looks fine.

As far as distance is concerned, the shape of the reflector will control the pattern of the illumination. Remember the light falls off as a function of a square root, so pulling the light back twice as far reduces the light a lot more than half.
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Old 04-19-2011, 05:08 PM   #15
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[QUOTE=Gregcoyote;1310503]Different bulbs age differently. The spectrum shifts, usually to the red part of the spectrum, the part corals could care less about. It is why I love LED lighting, they stay relatively flat until they burn out. Unfortunately, your eye cannot see this slow shift, but your corals can. The only solution is a regular bulb change and that's hard to make yourself do because the bulb visually looks fine.

....so how does one actually know when it's time to change out your bulbs??? And for someone like me who knows nothing about 'em ,what do I look for??
There seems to be so many choices,..right now as I said in the original post I have two blue bulbs a sun bulb and a 454 bulb running,..all which means nothing to me,..is this a good setup or should I look to buy something else the next time? My bulbs are currently only two months old
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Old 04-20-2011, 01:50 AM   #16
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Usually the bulb has the specs on ithe sleeve, or you can google it. Should have a rating for useful life.
If I were to invest in lights, I still like LED's because as I said earlier, they run pretty much flat on their long lifetime. Otherwise, I would guess 24 months would be a maximum.
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Old 04-20-2011, 01:59 AM   #17
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I run mine 8 hrs a day and change them every 10 mos. This type of subject you will get a different answers. I will suggest trying ati bulbs. More par output for the money. That's what I was told and haven't looked back since.
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