my 65g:
20K 175W on at 8:30am, off at 9:30pm
2x10K 175W on at 10am, off at 8pm
Refugium 65W PC, on at 8pm, off at 10am.
Why? because I hate waiting for the tank to come on in the morning.
(ok, I'll admit, the "20K bulb" is actually a 10K right now, but I'll have the 20K next week. You get the idea)