I've always wanted backyard pets.. a pond or chickens. Ponds seem very high cost to start up. I'd need a large one, at least 4 feet deep, to overwinter them here too.
Do your koi recognize you specifically? :D
Aww thanks! And my koi say "nom nom." Installing it was a lot of backbreaking work, but the upkeep is really low-maintenance. Less than a normal tank by far. The most I have to do is put a net up in the fall to prevent too many leaves from getting in the water. Aside from making sure the water level stays high enough and feeding the little monsters there isn't much else I do with it.