Here in the Silicon Valley, rates: $0.29372/kWh for peak hours vs $0.08664/kWh for off-peak hours. Our power company even encourages us to do laundry after 7pm
So to save $ was the main reason for considering reversed-day:
To swift lights on say 5pm and off say 12am. that means
-6 hours of total darkness (12am-6am)
-11hours of dim natural light (6am-5pm)
-7 hours of MH+VHO lights. (5pm-12am)
I don't know if it would work, any suggestions?
Now the tank, fishes, plants and lighting.
This 6'x2'x2' tank was set up about 2 years ago. The tank is placed in family room with a pair of east facing 7' wide French doors on both sides of the tank. There are four 4' windows, two each on the north and south facing walls. No door or window on the west facing wall. The room is kind of dark most of the time because of a 6ft covered porch that wrap around most of the house, so very limited direct sun light.
2 x 175w MH (6000k) + 2 x 140w 5' VHO, ttl: 630w.
Currently, the MH normally on 9 hours (2pm-11pm) and the VHO for 2 hours (the DYI tropical noon, lol) Currently, the fishes/plants gets about 6-7 hours of darkness.