Moving Koi Indoors for Winter in Cold Climate

Southwestern NY, cold winters, pond likely not deep enough. Wants to move koi to aquarium for winter, return in spring.

Indoor Wintering Steps

1. Set up aquarium with filtration, aeration, cycled media.
2. Match temperature: float bag in pond 30 min when moving out/in.
3. Keep water cool (50–60°F) to reduce metabolism, or room temp with feeding.
4. Spring move: when pond temp ≈ tank temp.

Ensure aquarium is large enough for koi size. Monitor water quality closely.