Oase AquaActiv AlGo Universal Total Algae Control 500ml

Directions Remove as much algae as possible prior to use in order to avoid unnecessary oxygen deprivation. Ensure an adequate supply of oxygen. Shake bottle vigorously before use. Using the measuring cup, add 50ml to 1,000 litres of pond water and distribute evenly. Additional dosage of half of the quantity is recommended after approx. 4 weeks in cases of strong algae growth. The treatment takes effect within approx. 2 to 3 weeks (assuming metabolic activity of the algae). Remove dead algae manually. Switch off UVC equipment for 10 days during application. Pond plants may develop brown spots in rare cases, which disappear again quickly.