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Old 03-02-2015, 04:20 PM   #1
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Acclimating to LED

I am switching from 4 vho bulbs to 2 120 watt Chinese full spectrum leds. How low should I start the lights on? How can I tell if that is too much/ not enough light?


90 gal reef
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Old 03-02-2015, 04:27 PM   #2
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Originally Posted by likeaboss2645 View Post
I am switching from 4 vho bulbs to 2 120 watt Chinese full spectrum leds. How low should I start the lights on? How can I tell if that is too much/ not enough light?


90 gal reef

What size tank? I have 1 unit on my 40 breeder and it is on the lowest possible setting for both blues an whites... These are very strong units.
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Old 03-02-2015, 04:29 PM   #3
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90 gal.


90 gal reef
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Old 03-02-2015, 04:32 PM   #4
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I would start low and see how the corals react. You can slowly acclimate them to higher light, like 1 notch every 3-5 days or so...
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Old 03-02-2015, 04:34 PM   #5
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Ok thx I will come back if I run into a problem


90 gal reef
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Old 03-02-2015, 04:48 PM   #6
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Very low, these put out ALOT of light. I had 4 T5s and upgraded to 2 chinese units and burnt my coral bad at the beginnig. Start at 25%.
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Old 03-03-2015, 01:25 PM   #7
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What kind of corals did you guys have in your tanks? I have mostly softies


90 gal reef
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Old 03-03-2015, 01:29 PM   #8
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Softies and LPS...
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Old 03-03-2015, 02:06 PM   #9
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SPS mainly, a bunch of LPS and some zoa's...
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Old 03-03-2015, 04:59 PM   #10
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All good advice. Too little light and the SPS corals will brown. But too much and they bleach. They recover from browning out much faster than recovering from bleaching. As a result start really slowly and allow a few days between changes for the coral to react. Nothing but bad things happen fast in reef keeping.


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