Unique non-staining liquid controls parasites.
Mardel CopperSafe safely medicates fish suffering from ich (small white spots), velvet (yellow-white spots, loss of color), and other external parasites (visible spots, worms, rapid breathing, extra mucous). For salt and freshwater. Unique non-staining liquid. One treatment is effective for over a month.
Ingredients: Chelated Copper Sulfate.
Instructions: Use 5mL for 4 gallons of water. Treats water for 1 month.