Effectively removes all kinds of algae Can destroy the cell walls of algae quickly without affecting the aquatic plants. Dose regularly can prevent algae growth, especially with a 30 min treatment before every water change. Directions: Recommended dosage: 3mls (1 capful is approx. 5mL) as initail dosage into every 50 litres. increase applying till fish & shrimps excited as Recommended dosage. Whole tank application Apply recommended dosage and after 1 hour, do a 50% water change. Repeat continuously for 3 days. Local spray application Use 1/3 of recommended dosage, further dilute up to 10 times. Turn off the filter for 5mins and spray to algae infested areas. after 1 hour, do a 50% water change Algae prevention operation Use 1/2 of recommended dosage, add to the aquarium at 1 hour before water change.