4ft led fixture

[axe_man16]

I need a bit of input on where I should place my LEDs. I have 2x 20"x4.5" heatsinks, 9 white led's, 7 royal blue, 2 blue, 2 red and 2 green.

My tank is quite narrow at 48"L x 13"D x 20"t

This is how laid the LEDs out.


Incase you can't read the writing in the picture here is the layout.

w---rb---w ---b-----------------w---rb---w---rb
----r ----g ----- rb----------w------ r----g
rb--w-----rb---w----------------b---w---rb---w
I am planning on having the fixture 6-8" above the water.

What do you think about the placement?