I have a pond that has no fish, that I want to add fish to. I think it's 100 gallons, but I'm not sure. It is 7ft long, and then it has sort of a strange shape. it is sort of like a figure eight, but wider in the middle. the bottom loop is 3 ft wide, the middle is 1.5 ft, the the top loop is 2 ft wide. If you know how many gallons it is, then let me know. Oh and it's 2.5 ft deep. I was hoping I could add some koi and comet goldfish