Plug for Freshwater™ Salt Sytem Utopia Filter Filter has a life expectancy

Filter has a life expectancy of approximately 1 year if maintained properly

Dimensions: (L x W x H): 9 x 3 x 3 inches

Hot Tub Filter fits the FreeFlow® Mini (all years)

keep the phosphate level in your hot tub below 300ppb

Plug for Freshwater™ Salt Sytem Utopia Filter Filter has a life expectancyYou 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.