King British Bacteria Control is a veterinary medicine for the treatment of bacterial infections, gill rot & external ulcers. Prevents external ulcers from spreading, cleans and protects wound infections allowing fast healing. For use in coldwater & tropical aquariums. One 100ml bottle will treat up to 900 litres of tank water.

Active Ingredients: Contains Formaldehyde (35.6% solution) 10.92% w/w, Sodium chloride 0.60% w/w, Magnesium sulphate 0.30% w/w and Allantoin 0.04% w/w.

Available in a 100ml bottle.