The AquaFX Add-On DI Single Canister 20x2 is a crucial component for any saltwater aquarium enthusiast seeking to produce ultra-pure water. This versatile DI filter can be easily integrated into most existing reverse osmosis (RO) units or operated independently, ensuring your aquarium receives water of the highest purity for optimal reef health.

Included with this unit is nuclear-grade, virgin, color-indicating mixed-bed deionization resin, housed within a convenient refillable cartridge. It is engineered to deliver exceptional water quality, achieving an impressive 18 megohm purity. The canister also comes complete with a robust mounting bracket and 4 feet of tubing for straightforward installation and immediate use.

This add-on DI canister is ideal for reef keepers and aquarists dedicated to maintaining a pristine aquatic environment. Whether used for topping off evaporated water, preparing new saltwater mixes, or performing water changes, it provides the essential final stage of filtration to remove all remaining total dissolved solids, safeguarding sensitive corals and fish from impurities.