I was planning on making a DIY ply wood tank approx 200-300 gallons, undecided... Heres the thing, I live in Ontario Canada,, and the winters here get pretty damn cold... But im moving in the next year,,, and the place im at right now doesnt have the space for a tank that big except for the garage... Would it be alright to put it in the garage where tehre is absolutly no heat at all? and is freezing in there? Could I just use a few water heaters? or would that not be enough to withstand the freezing temperatures of canada? thanks in advance.