MAKES TAP WATER SAFE: Pond water conditioner and dechlorinator. REMOVES HARMFUL SUBSTANCES: Takes out chlorine and chloramines and binds and detoxifies heavy metals that can be found in municipal water supplies. IMPROVES VITALITY: Contains iodide for more vitality and readiness to spawn. PROTECTIVE COATING: Liquid formula provides a colloid coating to protect sensitive fish gills and membranes. FOR OUTDOOR ORNAMENTAL PONDS: Use in new ponds or whenever adding tap water.