This effective water purifier is designed to purify all stored water systems, including tanks, containers and pipes. It's perfect for caravans and motorhomes, ensuring that you are protected from harmful bacteria and viruses. This 100g tub is easy to use and suitable for up to 15 gallons of water, making it a cost-effective and efficient solution to purifying your water system.100g pack of water purifierCleans and sterilisesCleans complete water system - including tanks, pipes, pumps and tapsEradicates bacteria, viruses and fungiPurification Capacity: 15 gallonsRecommended for caravans