OCReef 60 Watt CREE Silo High Power Aquarium LED Light Fixture
These are good.
However Cree has new XM-L lights that are more efficent and brighter than the XP-G and XP-E
DIY yourself is def the way to go.
I'd also go XM-L instead of of the XP-G or XP-E
Take a look at this
What this shows you is
XM-L 3.3V for 900L at 2.9amps
XP-G 3.52V for 450L at 1.4amps
XR-E 3.7V for 225L at 1amp
use less power to produce the same light and you can use fewer power supplys for the same amount of lights with the newer bulbs saving you money else where.
Of course the oldest XR-E bulbs are just over $6 while the XM-L is just over $11 but you need less XM-Ls
If you build your own your going to want cool white and Neutral white. I can't find the Royal blue ones for sale anywhere at the moment so you would most likely go with an older XP-G or XR-E verison.
I'm looking at a 30l or 40 gallon tank for my build in sept.
I'm thinking about 32 LED
8 Cool White XM-L
4 Neutral White XM-L
20 Royal Blue XR-E
those with 70 or a 100 degree optics
I was going to also go with two Mean Well dimmable drivers
I'm on the fence about a few moon lights.
If your going to build one i sugest drilling holes in your heat sink so you can screw the lights in. That way in the future you can replace the Royal Blue XR-E with XM-L or something more advanced when they come out.
The goal is to get power down as much as possible and give your tank a great look.