Check the listing for details. Sediment Plus Magnesium Alternative to Laundry Detergent [Easy Connect System]. Condition: New. Listed at 349.99 USD. You are purchasing (one) single twin in-line filter/cartridge system that filters water to your washing machine using a 10-micron sediment filter in conjunction with a Magnesium cartridge that breaks down the molecular structure of your water to act as a detergent for your soiled laundry. Magnesium is a very powerful cleaning agent that can replace, and or be use with most household laundry detergents. The sediment filter will remove most heavy particles and debris going to your expensive washing machine that can discolor whites over time. This Ultra Laundry+ system is good for 1-2 years of laundry washing, and can even be used along side standard laundry detergents and bleach washes for maximum results. **This filter system only adapts to the cold water hookup to your washing machine, and is not suitable for hot water connection. (for best results use only cold water option for laundry loads. Replacement filter cartridges are available in store/other items for sale.