cold cathode moon lighting - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 14 Old 01-19-2013, 12:33 AM Thread Starter
cold cathode moon lighting

so im going to put together a moonlight and i was wondering if anyone has used cold cathode dual 12in lights for moonlighting? im curious to how bright they actually are and if they would work well on a 55 gallon.
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post #2 of 14 Old 01-19-2013, 01:44 AM
yes 2 12" CC tubes on a 55 will work pretty well. Best running is around 9vDC or use a universal AC/DC converter. 12VDC looks cool but I would not call it legit moonlighting as it is too bight for the fish and not all will properly sleep.

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post #3 of 14 Old 01-19-2013, 02:12 AM Thread Starter
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Originally Posted by Mikaila31 View Post
yes 2 12" CC tubes on a 55 will work pretty well. Best running is around 9vDC or use a universal AC/DC converter. 12VDC looks cool but I would not call it legit moonlighting as it is too bight for the fish and not all will properly sleep.
hmmm. so i gotta choose now lol do i want it bright so i can see them when its time to turn my plant lights off or have it be more natural........ lloll thaNKS for the info tho! i cant seem to find a 4 pin molex 9v ac adapter tho.

Last edited by rexpepper651; 01-19-2013 at 02:20 AM.
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post #4 of 14 Old 01-19-2013, 02:41 PM
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Originally Posted by rexpepper651 View Post
hmmm. so i gotta choose now lol do i want it bright so i can see them when its time to turn my plant lights off or have it be more natural........ lloll thaNKS for the info tho! i cant seem to find a 4 pin molex 9v ac adapter tho.
you cut that part off. The two wires coming out of the inverter you splice to the AC/DC adapter. If you google "DIY cold cathode aquarium moonlighting" and click on the hit with the exact same name. It should be at the top or very close.

This is mine but cameras are not good a picking up the blue light.

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post #5 of 14 Old 01-19-2013, 03:35 PM
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post #6 of 14 Old 01-20-2013, 12:37 AM
LEDs are a bit cheaper, but not much. You still need the same ac/dc converter you would with cold cathods. LEDs are a good option for shallow tanks but I've found a lot of the cheap ones are lacking on deeper tanks like a 55 gallon.

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post #7 of 14 Old 01-20-2013, 09:53 AM
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Originally Posted by Mikaila31 View Post
LEDs are a bit cheaper, but not much. You still need the same ac/dc converter you would with cold cathods. LEDs are a good option for shallow tanks but I've found a lot of the cheap ones are lacking on deeper tanks like a 55 gallon.
For just Moon lighting??? I use em on my 24" deep tank, work pretty darn good if you ask me.
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post #8 of 14 Old 01-20-2013, 11:21 AM
I've wired 5mm moonlight LEDs for a few tanks and while the ones I used did light a 12" tank nicely with only 4 LEDs they didn't really appear to give the penetration the CC tubes did unless you really piled them up. .

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post #9 of 14 Old 01-20-2013, 12:12 PM
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Originally Posted by Mikaila31 View Post
I've wired 5mm moonlight LEDs for a few tanks and while the ones I used did light a 12" tank nicely with only 4 LEDs they didn't really appear to give the penetration the CC tubes did unless you really piled them up. .
Ah, but the lights I linked do. You have to have used them to know.
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post #10 of 14 Old 01-20-2013, 12:44 PM
I used LEDs from superbrightled.com and they are very bright. I personally would not buy LEDs without knowing there exact output, lumens, color temp, viewing angle, ect. The only Moonlights I still have running are my CC lights, the few LEDs ones I built were dismantled for one reason or another, usually brightness, color, or simply were rarely ever used.

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