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Old 05-05-2005, 11:47 PM   #1
mrwhipels
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10000k vs 12000k


I am plannig on upgrading my fowlr system to a full on reef. The only thing I am stuck on is wether to get a 10000k pc bulb or a 12000k one. Not shure the difference maybe sombody else could help me with this one.
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Old 05-06-2005, 12:14 AM   #2
aussiereefer82
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10000K is a crisp white light, nice and bright. 12000k is not as common but i imagine that they would be slightly blue. Usually the higher the kelvins (K) the blue the light becomes the lower the K the more yellow the light becomes. 10000k is about the medium, like i said crisp white, 6500k very yellow, 14000k bluish tint, 20000k very blue...you get the drift.
My personal preferemce is 10000k but either bulb would be ok.
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Old 05-06-2005, 12:17 AM   #3
mrwhipels
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the reason for asking this is because I found a good deal on a light but it comes with a 12000k bulb and was wondering if it would be wise to purchase a 10000k bulb. Wise meaning better coral growth
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Old 05-06-2005, 12:19 AM   #4
craigGP
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right on aussie. i'd recommend looking at the bulbs in action and then buy exactly what you looked at and preferred. different brands have different color at a given K. i just got a 10K coralvue that is really blue compared to the 10 K ushios i typically run. the ballast you run might have an effect too. buying without looking is an expensive way of finding one you like.

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Old 05-06-2005, 12:21 AM   #5
aussiereefer82
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There would be a small difference in growth but i dont think it would be enough to warrant buying the 10k bulbs and not using the 12k. If you decide you want to do this leave the 12k bulbs until you need to change them and then get the 10k, you should change the bulbs every 9-12months..... that reminds me, mine are due.
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Old 05-06-2005, 12:23 AM   #6
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Craig is also right, i should have mentioned that.
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Old 05-06-2005, 01:33 AM   #7
craigGP
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if growth is all you are looking for, go for 5600K. not much to look at, since the bulb is so yellow, but that mimics sunlight and would give best growth. most reefers are first concerned with looks, then growth rate. the minimal difference in growth you would get from 10K to 12K isn't worth worrying about. the best color i've seen (and this is totally personal preference) are the 14K. i don't remember which brand it was, but it looked like the perfect marriage of white light with actinic, all in one bulb.

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Old 05-06-2005, 06:22 AM   #8
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I think all theanswers are good here I like Crisp white looking light and not alot of blue when viewing a tank.
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