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Old 03-25-2015, 06:40 PM   #1
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165w dimmable led setting

Hi people
I have a the 165w chinese leds and have been running them on my tank for a few months at about 80% blues and whites!
So far corals are doing ok with the exception of a couple of recent additions!
I currently have the lights about a foot about water level with glass lid between them and the water!
I have been advised to run them at about 25%.
Would this benefit me?
My tank is 2ft deep!
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Old 03-25-2015, 06:52 PM   #2
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Did you acclimate the corals to the new light? If you didn't, you are basically burning them in a similar way of walking out of a dark room and into a bright sunny day.
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Old 03-25-2015, 06:54 PM   #3
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Yea i think i spoke to you about it before! I did but moved them up after a couple of days!
The bloke in my lfs said i got my lights too high!


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Old 03-25-2015, 06:56 PM   #4
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I have mine at 50% and my corals are doing great. Try knocking them down a bit


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Old 03-25-2015, 07:02 PM   #5
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Do u have a 2ft deep tank? How high have you mounted them?
I dont want the chains and brackets on show so mine a quite low


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Old 03-25-2015, 07:07 PM   #6
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I have my radions max out at 60% an they are 10-12 inches off the top of the water.


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Old 03-25-2015, 07:09 PM   #7
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Will the glass lid require me to have them higher??


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Old 03-25-2015, 07:26 PM   #8
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A glass lid or light diffuser will cut back some on the light penetration into the tank, but not as much as you think. Maybe 5%.
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Old 04-01-2015, 07:49 PM   #9
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I have a 2ft deep tank with I'm guessing the same Chinese leds and I run them 10in off the water at 100% white 100% blue. I know it sounds hight but after acclimating my corals slowly started at 50% and went up 25% per week. Now whenever I add new coral I will knock them back down to 50% and go through the same process. I don't think the lights need to be at 100% at all but it brightens the tank and corals have been growing well so I don't see why it too much. What kind of coral do you have? I have zoas, acros, hammer, candy cane, other sps and random softies.


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Old 04-02-2015, 02:16 PM   #10
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I had mine on 100% then chose to turn them down to 50% and have had really bad affects!! How long do you take to bring ur lights back to 100% and wat do u turn them down to?


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