Guardian Filtration Products, Max Clear Ion Exchange Pre-Filter, Garden Hose Filter, Removes Metal, Minerals, Calcium, Fill Pools & Spas CONTAINS - Ion exchange technology to soften, purify & decontaminate fill water. REMOVES - Common hard water minerals including calcium, magnesium, iron, lead & copper as well as lime scale, chemical contaminants, algae, mold spores, bacteria, organic debris TOC's, VOC's, chlorine by-products & suspended solids. FILTERS - Up to 8,000 gallons, removing up to 99% of contaminants & hard mineral deposits. CONNECTS TO - Standard hose fitting at top, 1/2'' threaded male connection at bottom MANY USES - Fill pools, spas, hot tubs, and ponds; use for outdoor pet baths, spot-free car washes, watering gardens & more.