Well in your billing summary you are figuring out power usage for your heater RUNNING 24/7. Just because it is plugged in 24/7 doesn't mean it RUNS 24/7. Due to lighting and ambient temps, I would say that your heater actually RUNS (is turned on) 6 hours per day at the ABSOLUTE MAX. Therefore it only draws power for that amount of time. So you would use 600 watts per day rather than your calculated 2400watts.
__________________
38 Gallon Custom Starphire, Remora Pro, 2 Seio 820's, 24" Giesemann Infiniti 1x250W MH + 4x24W T5, 60lbs Live Rock.
|