The Planted Tank Forum - View Single Post - LED choice 180 Gallon tank
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post #9 of (permalink) Old 05-18-2012, 06:38 PM
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Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,015
It takes a surprising amount of money for the odds and ends of hardware for a LED light, so I see nothing out of place on that estimate. I calculate that about 48 XP-G LEDs, with 40 degree optics, will give you the PAR you want, with the light about a foot above the top of the tank, and if you use something like 16 Neutral White and 32 Cool White with separate dimmable drivers for the two colors you would have some control over the color of the lighting. Personally I am not yet sold on using blue, green and red LEDs to augment the color. There should be no spotlighting with that design.

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