Properly mixing and aerating potable water helps introduce vital oxygen, control water temperature, prevent thermal stratification, and safely circulate chemical additives. These all contribute to ensuring your water is safe to drink and your tank is free from any associated damage. Kasco's NSF / ANSI certified product line includes our highly effective tank mixer, otherwise known as our CertiSafe unit. Tested and certified to strict safety and quality standards, this product is ideal for creating water flow and mixture in water tanks 20,000 gallons and larger.