Yes, you can add fish to a newly installed pond, but the water must be properly conditioned and the pond must be safe for fish before they are introduced.
What should I do before adding fish?
Condition the pond water. Use Aquascape Pond Detoxifier according to the product instructions to neutralize chlorine and other harmful substances in tap water.
Check the pump and filtration system. Make sure the pump, biological filter, and waterfall or aeration system are operating properly.
Establish beneficial bacteria. Add Aquascape Pond Starter Bacteria according to the product instructions to help establish the pond's biological ecosystem.
Test the water. Confirm that chlorine is neutralized and ammonia and nitrite are at safe levels before introducing fish.
How should I introduce fish to a new pond?
Start with a small number of fish rather than stocking the entire pond immediately.
Gradually acclimate fish to the pond's water temperature and conditions before releasing them.
Avoid introducing water from the transport bag into the pond.
Monitor fish behavior and water quality closely during the first several weeks.
Add more fish gradually as the biological filtration system becomes established and water quality remains stable.
Why should I add fish gradually?
A newly installed pond has not yet developed a fully established nitrogen cycle. Beneficial bacteria help convert harmful ammonia from fish waste and uneaten food into less harmful compounds.
Adding too many fish too quickly can cause ammonia and nitrite levels to increase, potentially stressing or harming the fish.
There is no single waiting period that guarantees a new pond is ready. Water quality, filtration performance, and the development of beneficial bacteria are more important than the number of days since installation.