Summer vs Winter Koi Feeding

Koi are cold blooded, meaning that their metabolism changes based on the temperature of their pond. Experienced koi owners make a few adjustments to their fish’s feeding plans as the water temperature changes with the seasons. Keep in mind that there’s no such thing as one-size-fits-all feeding plan. Water temperatures, water quality, dissolved oxygen levels, and stocking densities should be considered prior to feeding.

Hot Weather

  • For water temperatures 64°F and above
  • Feed an amount fish will readily consume in 5 minutes
  • Feed 2 to 4 times per day with Ultra Balance Premium Maintenance formula or feed 3 to 5 times per day with Ultra Balance Premium Growth formula for optimum growth of young fish
  • Reduce feeding if water temperature exceeds 88°F and watch closely for signs of stress

Cold Weather

  • For water temperatures below 64°F
  • Feed an amount fish will readily consume in 5 minutes
  • Feed a highly digestible wheat germ diet such as Ultra Balance Premium Maintenance formula 1 to 2 times per day
  • If the water temperature drops below 50°F, we suggest you stop feeding your koi (fasting them) since their metabolism slows down and they only eat what their body requires by grazing on algae
  • Introduce food again once the water temperature rises consistently above 50°F

Young Fish

(under 2 years of age)

Water Temperature:

Above 64°F

Growth Formula

Water Temperature:

50°F – 64°F

Maintenance Formula

Water Temperature:

Less than 50°F

Do Not Feed

Older Fish

(over 2 years of age)

Water Temperature:

Above 64°F

Maintenance Formula

Water Temperature:

50°F – 64°F

Maintenance Formula

Water Temperature:

Less than 50°F

Do Not Feed