To determine how many koi your pond can hold, you need to take into consideration a number of factors.
You firstly have to work out the total volume of water in your pond. To do this, multiply the length by the width by the depth, and then multiply the answer by 1000. For example, a pond of 6m long, 3 m wide and 1.2m deep will have a volume of 21 600 litres.
A rule of thumb says that a pond can support one large koi per 1000 litres of water, which means that the pond mentioned above could hold 21 large koi in its 21 600 litres.
This story is from the May 2017 edition of The Gardener.
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This story is from the May 2017 edition of The Gardener.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
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