Overview
Updated: 19 Oct 2026
Returns & Exchanges
Due to our very strict Bio Security policy, no fish can be returned to us, once they have left the premises.
Biosecurity & Health First
Koi health is at the heart of everything we do. We maintain exceptionally high biosecurity standards by working exclusively with reputable UK importers who follow strict quarantine protocols.
In addition to the importers quarantine process, every new arrival at NT Koi, undergoes our own rigorous 3–4 week quarantine process, with full health checks, medical dips, skin scrapes, and close monitoring.
Only once they have passed all stages are they moved into our main stock ponds, where they continue to receive scheduled parasite treatments. This meticulous approach ensures every koi we supply is healthy, strong, and ready to thrive in your pond.
14-Day Health Adjustment Period
We understand that koi often need time to settle into a new environment. That’s why we offer full after-sales support for every fish we sell. For the first 14 days after purchase, we’re here to help with any questions or concerns you may have while your koi adjusts to its new home. Please don’t hesitate to call or message us — we’re happy to advise on water parameters, feeding, behaviour, or any other settling-in issues they may have.
We provide full support during the 14-day adjustment period to help everything go smoothly
Any questions please don’t hesitate to to call or message us
nic@ntkoi.co.uk
07585 774290
Thanks
NT KOI