light question: anyone have marineglow and powerglow?

[vince]

Currently I have two sets of light hood above my tank and I was wondering how I should set the time to turn them on.
the first one is powercompact with two SmartLite
second one is florscent bubls. one is powerglow and the other is marineglow. Can anyone tell me anything about these bulbs? And when should I turn them on or off?
what is 50/50 or 20k?

 

[viking]

a 50/50 is half actinc blue and half daylight, a 20k bulb is a VERY bright daylight bulb.