Pond Construction: Planning and Budgeting for Your Pond

The following pond's are too small for raising koi fish due to their large size.
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A Koi, like other fish, will grow to its environment. In a pond or lake the Koi will eclipse the 12 inch mark in less than 24 months. These fish are expected to have reached half of what their maximum size will be by the time they are 24 months old. Their annual growth rate and maximum growth potential will decrease considerably if they are held in a water garden or similar environment.
Please call us with the specifications of your project and we’ll provide the customerized Fiberglass Preformed KOI fish Pond size you need.
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But perhaps what completed the tropical experience most was the abundance of shimmering koi ponds almost everywhere I stepped. Glimmering white, orange and black fish the size of party subs were right at my fingertips. To that effect, for me anyway, I find that the most peaceful, tranquil, relaxing and inspiring home landscapes are those that incorporate a fish pond. in mind that a 2,000 gallon pond can only hold up to 12 full size koi fish.
Photo provided by FlickrProper pond size for your koi fish… Koi fish need a lot of space, more than you would think
Photo provided by FlickrSize is determined by pond surface: 10- 30% of the pond surface should make up the bog. If you plan to stock a lot of fish or koi, go with a larger size.
Photo provided by Flickr
An ideal pond for the average hobbyist is between 23 and 25 feet long by 12 to 13 feet wide and 3 to 4 feet deep. (The 1% or less of koi hobbyists who want to grow jumbo koi or keep fish primarily to compete in shows with, will want much deeper ponds of 6 to 8 feet). This size pond can accommodate 15 to 20 mature fish (24 to 28 inches) giving them plenty of room to exercise and, will not look overstocked and crowded. Here’s how we calculate the volume of water in this pond: Length X width X depth = cubic feet X 7.5 gallons per cubic foot = volume in gallons. So, 25 X13 X 3 X 7.5 = 7312 gallons. However, this is only an approximate figure as the pond will not normally be a perfect rectangle and the shape may be more freeform. We will only know the exact volume of pond and filtration system upon filling the feature and metering the input. And it’s extremely important to know the exact volume.There are many different varieties of koi fish that vary in color, size, pattern, and type of scales. Simply put, koi fish are one of the most beautiful pond fish available. They have become so popular in the past century that they can now be found in ponds all across the world.The Koi is a carp that was selectively bred originally in Japan for desirable colors. Koi can get to be very large with 2 feet plus being a common size for adult fish. Because of their large size Koi are pond fish and they do best in large outside ponds. Each fish needs several hundred gallons of water to adequately care for them. A common mistake is to buy too many fish for your pond. While young, the volume of water in the pond may be fine, but as these fish grow they will need larger volumes of water to prevent growth stunting.The ideal pond size for keeping koi should hold at least 1,000-gallons of water. The very important thing when planning the size of your pond is the depth of water in it. Koi should be kept in at least 3-foot deep water to help your koi find cooler water in the summer and warmer water when it is cold. One thousand gallons of water should provide enough space for five koi fish, if all water parameters are correct.Koi fish can grow really, really big. The size they can grow to is determined by various factors, especially the environment they live in. If their habitat is well maintained, koi can grow quite large and also a lot healthier, living anywhere from 25 to 30 years. Exceptional koi can live for well over 100 years and the foundation on which everything else is built is a proper-sized pond.The stocking level of the pond is critical to the health of your fish. Too many fish leads to decreased oxygen levels and the extra fish waste leads to ammonia and nitrite build-up. To a certain degree, your fish load can vary based on your level of filtration. A pond with an undersized filter will not be able to keep as many fish, while an oversized filter will allow you a few extra fish. With an average-sized filter, your preferred stocking level will be based on surface area of the pond. For goldfish you can keep one average size fish for every 3-4 square feet of surface area. For koi, it should be limited to one fish for every 10 square feet of surface area. For example; a 10 x 10 pond will have a surface area of 100 square feet (assuming that it is a perfect rectangle). With an average filter this pond could house up to 30 goldfish or 10 koi. Of course, keeping fewer than this would make keeping good water quality even easier.