Quote Originally Posted by Jcd5v View Post
You do have to think about more than just that $20.00. It’s going to cost more to heat that 4’ than the 3’.


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The difference from heating a tank 3' long to 4' long is tiny. It might cost a little more for a larger heating device but the power itself is nothing. It's pretty easy to figure out how much power a device uses a year, then the cost of that power if you wanted to.