Hi all, first time to this forum, glad I found it. I've had three ponds so far that I built, one for each home. (Literally myself...rented a back hoe to dig the hole, used kitchen sink granite scraps for surrounding landscaping, including many plants, smaller rocks from my yard...)Currently my pond is 1300 gallons, and my goldfish keep having babies! Have about 30 now. My 3 Koi are really big now, and sadly I am going to pass them onto a wonderful pond store in the area who will take good care of them, too much fish poo. I'm moving again soon...and don't have time to build my fourth pond until Spring, before the ground freezes here. So wintering my fish, I hope, indoors in my new large basement with windows, in a 300 gal tub. All advice welcome!