LEDs for a 60g

My tank dimensions are 46x16x16 (weird hexagon shape) acrylic. Whichever LED's i choose will be contained in a hood and will sit about 4" above the water.

I want to keep LPS/SPS mix and I was wondering if I could get away with 1 ebay 120w dimmable.

The reason I ask, is because by my estimation/other posts, I will be good to go with a 36 LED kit from RapidLED and that totals 108W.

My 2 concerns are light spread and PAR (on the ebay lights)

With the RapidLED i will put it on 2 heatsinks to spread the light evenly over the tank. With the ebay enclosure it will be centered.

I have read mixed results (alot of good ones mind you!) about the 3w LED ebay lights but if I need to buy 2 of them to achieve what i could do with 1 36 kit from RapidLED I'd rather do that since they will be about the same price.

 

http://www.3reef.com/forums/led-aquarium-lighting/my-personal-taotronics-review-132104.html

REad that, and ask Kevin how many he thinks you'll need. I'm sure if ya post on his thread he'll get back with an answer soon.

Personally I'd do the rapid kit with 90 degree optics at least and add about 4 violets to the mix. Make sure ya mix up the rbs and cw's with a few blues and nw's. Maybe add a few cyan's to the mix as well.

 

You think I even need optics? I think I could go no optics because the lights are going to be so close to the water... I think they are 120 degree spread without optics right?

What is the purpose of violets and cyans, aesthetics or proper coral growth?