I started out 2 years ago with a 350 gallon pond for just plants. Decided I wanted fish so my dear hubby started over again and rebuilt a 1200 gallon pond, 3 foot deep. It houses 3 koi, 3 shebunkins, 3 comets and 2 organda goldies. My koi are mutts but I love them dearly. All my fish are well trained to eat out of anyones hand. This hobby is so addictive and we are already planning an expansion. I used to have a 190 gallon reef system and before that lots of fresh water tanks. When we did the remodel we put the 190 into the wall so servicing could be done in the laundry room. Did the outside pond and decided we love having fish ouside better so will be selling the tank and equipment as we cannot afford the two hobbies together lol! I have some questions which I will be posting soon.