have any of you been following the multichip led threads on some of the other sites? There is a lot of good info out there now and the cost is not that bad.
There are threads about a dream chip it is a hand pick of small leds in one chip 50w or 100w both are capable of more almost double the watt
think of it as a t8 lighting set up with each spectrum /k / color you like / need. All in a small powerful long lasting package
Right now I'm starting a build with a super atinic 100w (not a dream chip) but i will be getting two soon

100 LED Dream Chip:
1) 20 x 10000K
2) 20 x 455nm (blue, beneficial to chlorophyll C)
3) 10 x 420nm, 10 x 430nm (UV range)
4) 20 x 445nm (blue, beneficial to chlorophyll C)
5) 20 x 15000K

50 LED Dream Chip:
1) 10 x 10000K
2) 10 x 455nm (blue, beneficial to chlorophyll C)
3) 5 x 420nm, 5 x 430nm (UV range)
4) 10 x 445nm (blue, beneficial to chlorophyll C)
5) 10 x 15000K