Directions for use:
DO NOT use in aquariums with soft water (less than 50ppm total hardness as measured by calcium carbonate). If in doubt as to water hardness use in conjunction with water hardness test kit (kH). This product is toxic to fish in soft water and incorrect use can lead to fatalities of fish. Before using this product remove activated carbon from the filtration system for the duration of treatment. Activated carbon will remove this product from aquarium water resulting in ineffective treatment.
Dosage:
For hard water (greater than 50ppm carbonate hardness): use 5mL per 20L of aquarium water.
Repeat dosage after 3 days. DO NOT OVERDOSE.
Active Constituents:
1g/L Copper present as copper sulphate