Makes tap water safe for fish by removing harmful compounds and adding beneficial substancesContains special compounds that eliminate chlorine and chloramine, and bind up heavy metals.Contains colloids that coat the fish, protecting them against infectionUnlike most water conditioners, AquaSafe leaves no residues and is completely broken down to harmless substancesApplicationAdd 50ml of Tetra Pond AquaSafe to every 1000 litres (220 gallons) of water, to remove heavy metals and chlorine. Either treat mains water prior to using it in the pond, or treat the whole pond with AquaSafe prior to topping it up with mains water. For improving fish health and aiding wound recovery, add AquaSafe at 25ml per 1000 litres (220 gallons) every 2-3 weeks.500ml treats 10000 litres ( 2200 gallons)Available in 500ml & 1000ml sizes