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What’s the best way to acclimate new fish to my pond? – Pond & Lake Q & A

Float for 30 minutes.

Pond & Lake Q & A

Q: What’s the best way to acclimate new fish to my pond? – Lafayette in Maryland

A: So, you’ve been to the fish farm, picked out your fingerlings, brought them home, and now they’re sitting in plastic bags or tubs waiting to dive into your farm pond. Unfortunately, you can’t just pour them in. In order for these little fish to survive and thrive, you’ll want to slowly acclimate them to your pond’s water and its temperature.

Here are some tips to make it easy:

  • Oxygenate: When you pick up your fish, most farms will pack your fish in plastic bags with water and oxygen; the fish will be fine for several hours. But if you transported your fish in barrels, keep in mind that they will quickly run out of oxygen unless supplemented with an air stone or air diffuser, like the Laguna® Mini Aeration Kit.
  • Float for 30 minutes: The most widely used method of acclimating your fish to the pond is to float the unopened bag in the pond for about a half hour. This allows a gradual change in the water temperature until the water inside is the same as the water outside, at which point you can open the bag and release the fish into the pond.
  • Just add water: If you transported your fish in barrels or containers, use a bucket to add water from the pond to the barrel. This will gradually change the temperature and will provide some additional oxygen for the fish. Check your water temperature with a fish-safe thermometer, and once it has stabilized, pour your fish into the lake.
  • Remember, take it slow: Patience is critical when acclimating your fish to the pond’s new water temperature. Rapid changes in temperature may weaken the immune systems of your fish and make them prone to infection or – worst case – cause the fish to die immediately.

    POND TALK: How have you acclimated fish to your farm pond or lake?

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