Exclusive Hygienic tanks allow for easy access and sanitization, reducing mold, bacteria and other contaminants that can grow in enclosed tanks. Also available with ec-H20[TM] which is a cleaning technology that electrically-activates tap water to behave like a powerful detergent. Cleaning effectiveness is the same or better than general purpose cleaners, without the environmental or health impacts of producing, packaging, transporting, using, and disposing of traditional chemicals. You start with water and end with just water.