The power consumption of ODNO part is kind of misleading. It consumes nowhere near 4x electricity when doing 4x ODNO, just over 2x, see actual measurements in the ODNO thread in FAQ. It would be nice if we can do more measurements with different ballast configurations, to provide more data points. I am getting a kill-a-watt myself off ebay right now.
Flourite, wet/dry, AHSupply 302w PC, PinPoint controller
15w T6+15w T8
40w T6 ODNO4x, no CO2. Discus grow out.
10gallon Tonina tank, 2x15w T6 ODNO 4x
I will do aquascapes after I collect all the plant species and grow them to perfection.