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Old 03-07-2012, 06:18 PM   #12
salmon
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LEDs are almost here , just scored a nice 3' piece of aluminum channel, 3"x1" x 1/8" thick.

Trying to figure out if I can get the coverage front to back with 40deg optics with one 3" wide piece/bank, or if I should go with two. It will be suspended roughly 12" from the surface. I've seen a couple optic diagrams, the 40deg used 12" above on a 2' deep(front to back) tank it the spread looks to cover it nicely.

Will be using 12 XML's (maybe more), have mostly cool whites but also got some neutrals to maybe throw in the mix.

Anyone have any idea if I should use one or two chunks of 3" alu. channels to get the light spread front to back nicely?
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