Makes tap water safe. Advanced fast-acting dechlorinator and water conditioner. Neutralises toxins in tap water such as chlorine chloramine and fluorine. Contains the soothing properties of Aloe Vera to protect fishes\' mucus coating. Should be used when filling up your pond and when topping up. Safe with fish plants and filtration bacteria. For use in garden ponds. 250ml / treats up to 11250 litres 500ml / treats up to 22500 litres 1 litre / treats up to 45000 litres.