PraziPro. The world’s first ready to use liquid praziquantel treatment. PraziPro is a way to control unwanted parasites in your aquarium. Extremely safe and super effective and will not effect your biological filtration. Treats flukes, tapeworms, flatworms, and tubellarians. Also can be used as a preventative. Non-toxic to ornamental fish, animals or plants. Dosage: Use 1 teaspoon per 20 gallons or 1 oz per 120 gallons. 4oz treats 480 gallons. 16 oz treats 1920 gallons. 1 gallon treats 15360 gallons.