It is very dependent on your fish. Lights are for you and your pref. Fish need none.
I find that lights in the 10000k range bring out colors in my tanks, but I've heard that 50/50 bulbs will bring out blues, but wash out reds. Remember that using a 50/50 bulb is going to make your lighting much dimmer.
I find that lights in the 10000k range bring out colors in my tanks, but I've heard that 50/50 bulbs will bring out blues, but wash out reds. Remember that using a 50/50 bulb is going to make your lighting much dimmer.