I'm planning to move out within the next year and one of my major obstacles is balancing my finances. I've got a pretty good idea of my weekly/monthly expenses but one thing that I can't quite predict is the electric bill. I'll be discussing it with the family and get their take on about how much I'm costing them per month but because of schedule differences I've yet to get there. Basically I'm running 602 watts on three tanks, two 75g's and one 20g. I have a few more tanks but if/when I move they'll either be sold or boxed up until who knows when. I'm expecting to end up with both 75g's and a 125g I've yet to set up, the 20g will be sold/taken down by then. But for now I'm going off what I know, 602 watts, if tanks must go down for a while so I can grow up then so be it but I'd like to try and make it work. Luckily for me I watch very little television and don't plan on having cable, almost never use heating or A/C (blankets and ice water have always done the trick), and go by candle light whenever possible so a fair chunk of what would be my electric bill will be lower or non-existent. SO, to sum it up any idea what 600 watts would cost me per month? I'm not looking for an exact number by any means and I'm sure it will shift throughout the year depending on season but a ballpark estimate from a few self-providing elder MFKer's would be much appreciated. 