Just threw up in my mouth a little bit... the electricity bill came

[mseepman]

I don't have a large tank yet but with my 70 and my HQI nano I only burn about $17/mth. I did get a Kill-o-Watt Meter and check all my devices though when I set things up and I had a quietone pump that was pulling 3x what they said it would. I got it replaced and now it reads really close to what it should.

Beyond the lights, I think it's often the big returns that gobble up power on your large tanks.