Koi In A Livestock Tank

A friend of mine was telling me that I could put Koi in our livestock tank to help keep it clean. I don't think this is right? What do you think? -Melissa A Koi will keep it clean, until their waste builds up. They will eat any grass and bugs that get into the tank, but they will pollute it with their waste. You are better off just getting a filter for the tank. If you have Koi, they will need a filter, food, care, ect. It is much simpler to just put a filter on for the tank. Share: Del.icio.us Digg Reddit