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Old 05-14-2007, 04:30 PM   #1
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10k or 6700K

Which is better for the plants?
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Old 05-14-2007, 04:38 PM   #2
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Doesn't make any difference. Pick the one you like.
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Old 05-14-2007, 04:49 PM   #3
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What's the difference? Appearance-wise

Found a great answer:

http://www.myfishtank.net/forum/aqua...peratures.html
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Old 05-14-2007, 05:21 PM   #4
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Natural sunlight = 6500k I think. 6700k is too yellow to my eyes so I prefer the look of the 10k. Like Rich said, its mostly all in what you like the best.
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Old 05-14-2007, 05:25 PM   #5
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The 10000K is going to appear brighter than the 6700K. I just changed my bulbs from 6500K to a dual daylight 6700K/10000K. I thought I was going to have algae problems because the 10000K bulbs were so much brighter than the old 6500K bulbs. Since I got the same wattage as I had before, the wattage was the same to the plants, so no algae outbreak. Although the 10000K is brighter than the 6500K-6700K to our eyes, after getting used to them, they don't seem that bright anymore. My plants are growing very well.
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Old 05-14-2007, 07:23 PM   #6
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I've had both and I prefer the higher K rating. The lower rating just appeared to be too yellow for me.
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Old 05-15-2007, 10:22 AM   #7
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I have one of each on my 55, check out the pic in this thread. I agree the 6700Ks can be a little yellow. I have blue fish and they look great with the 10000K. The plants don't care what you use.

http://www.aquariumadvice.com/viewtopic.php?t=96859
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Old 05-15-2007, 10:49 AM   #8
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I opted for the 6700K COLORMAX bulb...

http://www.marinedepot.com/md_viewIt...product=PC5659

It has a pinkish hue to offset the yellow and it is NICE. I really like it, plus is a lot brighter than my old bulb (1 yr old)
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Old 05-15-2007, 08:31 PM   #9
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I have both 8000K and 6700K and think 8000K is good. The 10000K maybe too blueish.
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