T.J. are you going to build a small fish room and isulate it inside the garage? If not what are your plans for when it is 15 below zero and the garage is down to like 10 degrees? You will either need a few 1,000 watt heaters or have to heat your entire garage. I could see making a small enclosure that is vented to the inside and well insulated so it will be maybe 10 degrees cooler than the house but MUCH warmer than the garage.
Just a little early concern for your new, bigger, better build thread
If you ever need any help let me know. I can swing out there sometime and help plumb or drill the tank or even build a few walls with ya
