11 hours actinics. 2 4 foot T-5
7 hours MH, but they come on one at a time (an hour apart) and go off one at a time (an hour apart). 3 bulbs. 250 watt 10,000k w/luminarcs.
Length of photoperiod doesn't mean anything. There are too many variables.
length of photoperiod does mean something... one being in sps corals they can only take up a certain amount of light.... per day... , less time light is on= save $$$$ on electric....
i dont disagree with you on the many variables... :biggrin:
12 hours Actinics
7 hours MH
2-3 hours Blue LED Moonlights (these are very bright on my new Aqualight Pro fixture. I've discoverd that the fish won't sleep when these are on so I turn them off before I go to bed.)