Imperial Garden Products OSI Water Worm and Fungi Terminator 7ozEliminates external worm parasites on the skin, gills and fins. Stops growth of fungi in wounds. Add 5 tsps for every 43 gallon of water. Bottle cap holds 5 tsp. Repeat the same treatment every other day for the next 6 days. Kills gill fluke worms, body fluke worms, and fish lice.Stops Growht of Fungi in woundsEliminates External Worm Parasites