PraziCleanse is a safe and effective anti-parasitic treatment to control unwanted parasites. Effective against skin and gill flukes tapeworms flatworms and turbellarians. This treatment is suitable for fresh and saltwater aquariums and will not discolor the water. It does not harm plants other invertebrates or uninfected fish. Do not use in systems with tube worms or feather dusters. Features PraziCleanse Parasitic Treatment Can be used full strength with scaleless fish Safe for other invertebrates including: corals snails shrimp clams other crustaceans and molluscs NOT SAFE for systems containing tube worms or feather dusters Remove these species before treatment or treat in a quarantine tankDirections & Dosage: Use one packet of Prazi. Cleanse per 20 gallons (76 L). Repeat treatment after 5 days after a 25% water change. See below for treating tanks smaller than 10 gallons. Day 1: Add the contents of one packet per 20 gallons (76 L) of water Day 2: No treatment needed Day 3: No treatment neede