[kylek]

Just make sure if you are building any outside ponds to have good depth if you live in a colder climate area, both of my outdoor ponds are 4 - 5 feet at the lowest point. Plus Koi do not digest food when the water is cold so I stop feeding them when the water hits 50 degrees F. When the water in the fall gets to around 75 degrees I stop with their regular food and lettuce heads and switch to a winter blend of food. But stop at 50 degrees as if they do eat food they do not digest it and it can sit and rot in their intestines causing sepsis and the Koi will usually die.