Simply add this to rid terrarium pools of chlorine, chloramines and heavy metals. It's easy to add exactly the right amount using the included dosing cap. Makes tap water safe for aquatic animals such as turtles, frogs and newts|Neutralizes chlorine, chloramines and heavy metals|Bottle cap doubles as a measuring guide which assures accurate treatment|Quick and easy to use|Ideal for: aquatic and semi-aquatic reptiles and amphibians.