I have a 1000 gal koi pond, 2ft deep at it's deepest point, and I live in Arizona. The water temperature never gets down to freezing here, just to about 35 - 40 F at the coldest. My koi do just fine outside over the winter, but I also have 2 big plecos in there. In the past, I've always brought them inside and let them bunk up with the oscars. Lately, I've had a couple of people tell me that they leave their plecos in their ponds all winter long. I thought they were more tropical than that... What do you guys think? Would they be alright in the pond?