Want to Build a Koi Pond? - 12 Tips You Need to Know
August 29, 2009 5:01 am HomeChoose a location that gets both sunlight and shade. Sunlight encourages plant growth, but encourages algae growth. Shade also gives your koi a cool, dark area to hide. If you must build in full sun, consider building some type of arbor. Your pond size is aesthetic as well as a maintenance issue. The larger the pond the more maintenance. koi pond care The minimum size pond is a 1000 gallon ( 5′x6′x4′D) A 1500 gallon ( 7′x9′x4′D) allows for fish growth. A 2500 gallon ( 12′x7′x4′D) is an optimum size for a growing enthusiast. Koi usually grow to 6″ to 8″ in one year, and 24″ to 36″ in 7 to 10 years.