Zeolita Natural ZN AQUA® is a high quality zeolite specifically selected for use in water treatment and filtration applications. It is a very hard zeolite which is activated (dried) at 350ºC, milled, seived and separated into the sizes shown below. It is the perfect choice for all water treatment and filtration applications including swimming pool filters, aquarium and pond filters, fish farms, industrial and municipal water treatment plants, water recycling systems and water potibilization systems. Zeolita Natural Aqua conforms to EU Regulation DIN EN 16070 which authorizes the use of clinoptilolite to treat drinking water.