Add 5 ml per 20 l of aquarium water every 4 weeks.
Dosage control: Add 5 ml per 10 l of aquarium water. Repeat after 4 weeks if required.
Application: Shake before use. Add liquid directly to the water.
Note: Keep product away from sunlight. Activated carbon filtering reduces the effectiveness. Switch off the UV clarifier. Aeration required. Preferably remove dead algae mechanically.