Well, I’ve had my 300 gallon Rubbermaid stock tank in my garage for almost a year but I’ve recently noticed mold and I got a little one on the way and I want none of that near the house.. so my question is has anyone kept a outdoor tropical pond in a colder climate in the winter? I’ve got peacock bass and some larger cichlids. Any advice would be awesome on insulation and such. Maybe Leave the water really low in the winter and put a extra heater in? I think at the lowest we saw temps of 25 degrees last winter.