Easy-Life Bio-Exit Blue is a new way to prevent excessive algae growth in the aquarium in a biological way, without chemicals. When used correctly, Easy-Life Bio-Exit Blue is not harmful to fish, plants, shrimps and other invertebrates in the aquarium. A microbiological imbalance of soil bacteria can ensure that blue algae or cyanobacteria have the opportunity to grow. Bio-Exit Blue strongly stimulates the growth of heterotrophic soil bacteria. In this way the microbiological balance in the soil can be completely restored. Dosage Easy-Life Bio-Exit Blue:Shake bottle before use. Remove activated carbon. Do not overdose. Balance treatment during 2 weeks:day 1: 10 ml per 40 liters of waterday 7: 10 ml per 40 liters of waterday 14: change the waterno water changes during the treatment.If the result is insufficient, this balance treatment can be repeated.