KOgle, wasn't it you who said you wanted to start an aquarium maintenance business? Doesn't this mean that you also have to offer help setting up, starting and eventually moving aquariums for services? Just wondering.
Chris, a business's electric bill is alright/easy to pay if you are making the sales volume that you need. Besides, where I live, businesses are charged 21 cents per kilowatt hour instead of the residential 7 cents per kW/hr. So, I don't think that it's going to hurt even as bad as 150 a month.