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Old 09-14-2012, 02:52 AM   #1
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Is this a suitable array? I'm doing this because my fixture had a six led moonlight but it fell into the tank and the only thing broken was the moonlights for whatever reason however the leds are good as I've wired them up for testing.

I was planning either 12 or 24 led array but I figure 12 is most likely enough for a 40B. though would it be more affective to use a 12v old laptop power brick or just an old 9v charger? Going to get the leds from radioshack already have 390 and 470 ohm resistors since they dim the lights well.

I'll be using proper blue color leds 470-480nm should I add a few white leds?

So I guess how many leds can I add without it stressing the fish? This is for a heavily planted freshwater tank.

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Old 09-14-2012, 01:28 PM   #2
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Not sure your a must do dyi guy or not. But I wanted to add blue led night lights on my 75 gallon and bought these. I have tons of 12V adapters in the garage from broken electronics. I just stuck them on my light and they are just as bright as my marineland double bright led bar on the other aquarium.

120CM 1210 SMD 60 LED 47.2" LED Bulb Flexible Lights Strip Waterproof Blue | eBay
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Old 09-14-2012, 02:01 PM   #3
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Not a bad deal, what nm spectrum are they? Mind showing me what the look like in your tank?
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Old 09-14-2012, 04:13 PM   #4
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Quote:
Originally Posted by cyris69 View Post
Not a bad deal, what nm spectrum are they? Mind showing me what the look like in your tank?
Are you trying to grow plants with your moonlight?

At night a freshwater planted tank doesn't need any proper parameters. The moonlight would be all for looks pretty much.

I use the inexpensive Marineland LED Bubble strip in blue. I have it secured to the lid to give a nice bluish glow to the FW fake reef tank at night. On another tank I have the white version, which looks very nice as a subdued light in a planted style tank.
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Old 09-14-2012, 08:35 PM   #5
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Well I setup the array I messed up a few leds but they are cheap UV ones so going to take apart an old 12 led flashlight and add a few of those for white light.
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Old 09-17-2012, 08:07 AM   #6
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I can get some pics tonight. But the blue light, like hpguy said, is strictly for looks and to see whats going on after the lights go off.
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Old 09-17-2012, 01:13 PM   #7
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That's all I want them for. I just mentioned 470nm because that is the color spectrum for blue that mimics moonlight the most.
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Old 09-17-2012, 01:49 PM   #8
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I have this on one tank. Marineland LED Double Bright

On the other is the ebay strip. They are on the same wall separated by a TV. Link to my setup At night,I can not tell the difference.
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