Easy life blue exit effectively combats blue algae or slime algae cyanobacteria in freshwater aquariums the algae combatant is non toxic for fish shrimp and plants daily use of 10ml per 80 litres over a period of 5 consecutive days removes cyanobacteria within 10 days following the first dose the water should not be changed within the first 14 days of the first dose and no adsorption materials should be used instructions use 250ml of blue exit for 2000 litres of aquarium water remove an