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Old 10-23-2004, 11:44 PM   #1
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6500k light saltwater

Theres been a lot of talk about using 6500 k lights on salt tanks, it's been my experiance that 6500k's have no use for coral growth, if im wrong let me know. on my tank i use 10000k and o3's, they have always worked for me and i dont plan on changing them, but was curious why people use 6500k.

along with that i know 6500k is used in fresh tanks for plant growth, i was wondering if this spectrum would promote macro algea growth in a fuge and or in the main tank.

Just curious THANX
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Old 10-24-2004, 10:25 AM   #2
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I used Coralife 6500k MH bulbs over my reef tank for probably 10 yrs before I switched to 15000k bulbs. I really didn't see any difference in coral growth. The biggest difference I noticed was the color and I needed more 03 supplimental lighting with the 65's.
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Old 10-24-2004, 01:02 PM   #3
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I thought 6500k were good for growth but most don't like the yellow look. The Iwaski MH 6500k were popular and supposedly had real good growth.
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Old 10-24-2004, 07:50 PM   #4
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what about use for macro growth
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Old 10-24-2004, 10:17 PM   #5
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I use a 20 watt 6500k screw in PC bulb over my fuge. Seems to work as well as the 75 watt grow bulb I used previously.
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Old 10-25-2004, 09:29 AM   #6
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Quote:
I use a 20 watt 6500k screw in PC bulb over my fuge
me too, works fine
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Old 10-25-2004, 02:10 PM   #7
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when i have to replace my PC dual daylight bulb ( 65 watts 10,000k / 6500k ) should i just go with a 65 watt 10,000k.

steve r
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