Keep your fish fit, healthy and swimming with smiles on their faces. King British Swim Bladder Control relieves bladder problems and constipation. Particularly recommended for Orandas and other fancy goldfish that have constricted swimbladders, use this treatment when they are unable to swim upright. One 100ml bottle will treat up to 900 litres of tank water. Shake bottle well before use. Using pipette add 1ml of Swimbladder Control for every 9 litres (2 gallons) of water. Alternatively add 1 capful (4ml) of Swimbladder Control for every 36 litres (8 gallons) of water. Repeat treatment at 48 hour intervals while symptoms persist.