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Old 02-03-2013, 09:35 PM   #1
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LEDs for a 45 gallon?

Okay so I have failed to find any kind of help that tells me about how to do led in your tank.

What's the recommended amount of led nessisary for a fresh water?

I know that you want 3amp rgb's but past that I haven't a clue.

Could anyone link me to a tutorial type page or explain what you need to have good plant growth?

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Old 02-06-2013, 02:41 PM   #2
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I would do 4x50w multi chip LEDs whatever color you like maybe warm white or cool white. Cree has some great lamps like this, I think they are called xpg's for about $30 each. Get you 2 heatsinks around 6-8" x 18-20" in size. And run the 50w LEDs at 30w, so a led driver at 36v and 1000mA for each led. You could add a dimmer if you like, you may have to dim each one individually, or instead get a single powersupply for all four LEDs. It would be 36v 4000mA .
This is just one route or you could do it with teo fixtures of 15 x 3w LEDs with similar heatsinks and power supplies.
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45 gallon, 5 gallon, led

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