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Old 12-31-2013, 04:53 PM   #11
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Thanks all
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Old 01-01-2014, 01:55 PM   #12
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Most people would recommend fixtures with 3-watt LEDs on them. I would say it depends on the size of your tank. If you follow one of the topics here, you will find that they set them only at a quarter or not even half of the full capacity of their lighting fixtures. That means only about 1 watt or less of each LED is being utilized. The height of your water in your tank dictates the intensity of light or PAR you need. In my case, I have a shallow reef tank with only about 15 inch water. I use a reef capable 1-watt LED and I have to raise it 8 inches above the water surface since above water the loses is less than in salt water. As long as corals are directly underneath, it will work. I have SPS and they grow.
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Old 01-01-2014, 02:25 PM   #13
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My tank is 18 wide x 24 deep.
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Old 01-01-2014, 02:42 PM   #14
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Quote:
Originally Posted by joby wan View Post
My tank is 18 wide x 24 deep.
If your substrate is 3 inches with 1 inch overflow from top then it leaves you 20 inch water deep. You can locate SPS close to surface to optimize your light.
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