Korallen-Zucht Flatworm Stop will help reduce parasitic flatworms on Acropora and SPS corals while strengthening all other types of corals. Works by making Acropora tissue unpalatable to acro-eating flatworms Reef-safe and will not harm any other vertebrate or invertebrate Rapid regeneration of harmed corals as well as increased basal encrustation Dosage: 1 mL per 25 gallon tank water daily. Dose directly into the tank. Can be combined with Coral Booster for a strong synergistic vigor booster. Korallen-Zucht Flatworm Stop will help reduce parasitic flatworms on Acropora and SPS corals while strengthening all other types of corals. Dosage: 1 ml per 25 gallon tank water daily. Dose directly into the tank. Do not exceed recommended amount.