Plug for Freshwater™ Salt Sytem Utopia Filter Tri-X filters are made with

Tri-X filters are made with ceramic pleats and are designed to filter twice the water per minute as a standard paper filter

• Marino 2010-2018

DO NOT USE in granulated chlorine

Tango 2002-2003

Bottom: Flat with Center Hole

Plug for Freshwater™ Salt Sytem Utopia Filter Tri-X filters are made withYou know that thing that looked like a defective salt cartridge and came with your new Freshwater salt system hot tub that you misplaced or threw out? That's called the Freshwater Salt System Plug and you need it! It's purpose is to keep air out of the Freshwater Salt System. You need the Freshwater Salt System Plug in a few situations: 1. If you ever move your hot tub. Before you move your hot tub, take out the salt cartridge and put the plug in. 2.