Seachem Health Guard Fish & Plant Disinfectant

Pond HealthGuard is a disinfectant used to promote the control of parasitic, bacterial, fungal, and viral infestations of fish in ponds.
It contains no malachite green or other dye based disinfectants that can discolor or quaternary disinfectants that foam.
Considered safe for fish, plants, and the biological filter when used as directed.
Use caution when treating and calculating dosage rates.