ok so I have this male dovii in my 125 with several other fish. it is most likely going to get too big for the tank. I don't want to get rid of it I want to own up to it because eventually one day ill buy it a tank big enough. I was thinking of putting it in a Rubbermaid stock tank 150-300 gallons. I don't have room for another tank in the house and even if I did my parents would not allow it so I am considering doing this in my garage. the thing that concerns me is the temperature during the winter. I am in new York and it gets very cold at times. I will obviously put heaters in it but idk how that's going to work out. is the gap in tempature too much stress on the heaters or is it a do-able thing? please share your thoughts and opinions. thanks guys.