How many koi can I keep in my pond?
The Gardener|May 2017

To determine how many koi your pond can hold, you need to take into consideration a number of factors.

Angela Beckx
How many koi can I keep in my pond?

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.

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