
Originally Posted by
_ReApEr
Outsmart him (your dad). Find how many watts were used the previous month, how many were used that month, and how many watts your lamp uses. Multiply your lamp's wattage by your photo period, then by thirty. Subtract that number from the difference of the previous month and the month in question. You should find (assuming the thing about your sister running a space heater is true - space heaters use TONS of energy), you should have a very major discrepancy.
Anywho, I can't know for sure, but my first reaction is that you probably shouldn't do it. Definitely wait for others to chime in, though.