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Old 06-25-2013, 06:29 PM   #21
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I don't use the optics. I just have the shield over my tank and am quite happy.
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Old 07-10-2013, 12:35 AM   #22
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So I hung my lights Sunday. I have them on 25% blue and white, and 7" above the water. How slow should I go with lowering the lights (to 6" to 6.5" mainly for looks) and raising the blue and white precent. I don't wanna burn/bleach anything. Right now everything looks fantastic and seems to be loving the new lights.
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Old 07-10-2013, 01:47 PM   #23
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I take it back, I way not want to lower my lights anymore. This height is pretty good for maintenance.
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Old 07-10-2013, 07:53 PM   #24
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I'd go up 10 percent a week until you get them to the brightness you need/want.
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Old 07-11-2013, 10:37 AM   #25
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BTW, it's come to my attention that the 120 degree optics are what I am using. They appear to be a little glass bubble under the plastic shield. Not traditional optics that appear to be a snap on lens.
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Old 07-11-2013, 11:09 AM   #26
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BTW, it's come to my attention that the 120 degree optics are what I am using. They appear to be a little glass bubble under the plastic shield. Not traditional optics that appear to be a snap on lens.
Ooh alright, yeah I noticed that when I got mine. I'm pretty happy with the 120. The spread is full, but very minimal overflow.
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Old 07-11-2013, 01:26 PM   #27
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Can a newbie jump in and ask a question? I'm also looking to order these lights for a 20 high. What are optics?
And OP, would you mind posting a pic of your setup?
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Old 07-11-2013, 01:34 PM   #28
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Can a newbie jump in and ask a question? I'm also looking to order these lights for a 20 high. What are optics?
And OP, would you mind posting a pic of your setup?
Optics are lenses on the LED diodes. Like little tiny magnifying glasses. So far I absolutely love mine, and so do my corals

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Not a beautiful hanger, but it does its job
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Old 07-11-2013, 01:42 PM   #29
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Thanks so much. How does one determine how much of a blue/white ratio to set?
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Old 07-11-2013, 02:01 PM   #30
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Thanks so much. How does one determine how much of a blue/white ratio to set?
By how the corals react/visual preference.

Or a par meter if you have one. Most people (including myself) wouldn't have one.
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