This document provides instructions for using GreenZeo, a natural zeolite, to improve water filtration. GreenZeo has a surface area 100 times greater than sand, allowing it to trap smaller particles and improve water clarity. It also traps and holds ammonium ions, reducing chloramines and the need for chemical shocks. The instructions explain how to replace sand with GreenZeo in filters and refresh its ammonium trapping capacity by soaking it in a saltwater solution.