When should I use Aqua MedZyme Liquid?Aqua Medzyme Liquid

Aqua MedZyme’s beneficial pond bacteria should be used every other week as soon as your koi pond water reaches 40 degrees F and stays at this temperature for one week, day and night in the spring. Continue treating all season long until you koi pond water drops below 40 degrees F in the fall.

Pond care tips on opening your koi pond in the spring