How to Add Water to a Fish Pond

Written by kassie kleifgen
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How to Add Water to a Fish Pond
Refilling your pond water must be done correctly to ensure fish safety. (Pond image by Lucid_Exposure from

You may need to fill up your pond with water if your backyard pond is getting low. If your pond gets too low, it may make your fish feel uncomfortable or not give them enough room. When adding water to your pond, it is important that you use the right kind of water, and put in the appropriate amount. Improperly adding water to a pond could lead to fish diseases, dirty water or deaths among your fish.

Skill level:
Moderately Easy

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Things you need

  • Specific pond water
  • Thermometer

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  1. 1

    Figure out the type of water you used in your pond and get more of that water. When adding water to your pond it is important to use the same type of water with the same nutrients and chemicals in it. You may have water with chlorine or chloramine in it, or you may need to use well water.

  2. 2

    Bring your additional water to the same temperature as the water in the pond. Use a thermometer to check the temperature of the pond water, and chill the new pond water to that temperature by placing it in a refrigerator, or warm up the new water by placing it in direct sunlight.

  3. 3

    Calculate five per cent of the original amount of water you used for your pond. Split up the new pond water into five per cent increments and set them aside.

  4. 4

    Add one increment of five per cent slowly every day. Never exceed five per cent a day. You can do this by slowly trickling the water into the pond throughout the day, or adding a small amount of water to the pond every hour.

Tips and warnings

  • Chlorine water contains ammonia.

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