Immune-Plus

Immune-Plus' all-natural probiotic formula works quickly and safely to protect your freshwater aquarium. Biological additive protects against a number of fish diseases, including ich, aeromonas (Hole in the Head), and vibrio. Also effective against body fungus and closed fins. Immune-Plus incorporates 5 different strains of probiotic bacteria to help reduce fish loss in your tank. Fish-safe formula contains no chemicals, pesticides, or copper. Use 2 tsp. per 20 gallons the first dose, and then use 1 tsp. per 20 gallons each week. 14.5 oz. treats up to 1,720 gallons at maintenance dose.

How it Works
The probiotics in Immune-Plus are designed to "overpower" pathogens by becoming the dominant bacteria in the aquarium, eating up the food source that pathogens rely on.