Seachem Metroplex Bacterial Disease Fish & Aquatic Supplement For more than 30 years, aquarium hobbyists have turned to Seachem Laboratories for products designed by chemists and biologists. Safely treat several protozoan and anaerobic bacterial diseases (Cryptocaryon, Hexamita, Ichthyophthirius) with Seachem Metroplex. This medication is gentle but effective. Instructions: Use when adding new fish and to treat open red sores, fin and tail rot, open body wounds, eye cloud, pop eye, body slime and mouth fungus. Treats: 5ml treats 10 U.S. gallons of water. Directions: Shake well. Remove activated carbon if possible. Add 5ml per 10 U.S. gallons of aquarium water. Disease or wound treatment: Dose daily for 7 days. After 7 days, make a 25% water change. Continue treatment, if necessary. Adding new fish: Dose daily for 3 days.