What temperature for koi?

Koi thrive best in water temperatures ranging from 65°F to 75°F (18°C to 24°C). They can tolerate temperatures as low as 50°F (10°C) and as high as 85°F (29°C), but prolonged exposure to extremes can stress them and affect their health. Maintaining a stable temperature within their optimal range is crucial for their growth, appetite, and overall well-being.