Tropic Seas 50 Sq Ft. Hot Tub Filter (Fits Tahiti, Waikiki, Oahu, Maui, Fiji, Kona, Rio, Kawai, Lanai) Filter Accessory Active Ingredient: 100% Calcium Chloride

Active Ingredient: 100% Calcium Chloride Dihydrate

The Freshwater™ IQ Sensor should be replaced every 12 months

Sirona™ Natural Clear Enzyme Clarifier is a natural blend of enzymes that will rapidly eliminate unsightly residue

These crystals will help relieve stress and tension

Tropic Seas 50 Sq Ft. Hot Tub Filter (Fits Tahiti, Waikiki, Oahu, Maui, Fiji, Kona, Rio, Kawai, Lanai) Filter Accessory Active Ingredient: 100% Calcium ChlorideThe Tropic Seas Spas 50 Sq Ft. Hot Tub Filter is the replacement filter for the following Tropic Seas models: Tahiti Waikiki Oahu Maui Fiji Kona Rio Kawai Lanai Filter Specs: 50 Sq Ft. filtration Height: 8" (not including bottom threaded portion and top handle)Diameter: almost 6 3 4"Top: Semi Circular HandleBottom: MPT (Male Threaded); Center Hole Diameter: 1 7 8" The Tropic Seas Spas 50 Sq Ft. Hot Tub Filter has a life expectancy of approximately 1