The AquaFX Add-On DI Dual Canister 10x2 is a crucial component for achieving ultra-pure water in saltwater reef aquariums. This system is designed to seamlessly integrate with most existing reverse osmosis (RO) units, providing an essential final stage of purification by removing remaining total dissolved solids (TDS). It can also function as a standalone deionization unit, delivering the pristine 18 megohm water quality vital for sensitive marine environments and preventing issues like nuisance algae.

This robust unit features two 10x2 inch refillable canisters, pre-filled with high-quality nuclear grade, virgin, color-indicating deionization resin, allowing for easy visual monitoring of resin exhaustion. Users can customize their setup by choosing between two mixed-bed DI cartridges or a combination of one anion and one cation cartridge, tailoring the purification process to their specific water conditions. For convenience, it includes a mounting bracket and four feet of tubing, making installation straightforward and flexible.

This add-on DI system is an indispensable tool for dedicated reef aquarists and those maintaining delicate aquatic life who demand the highest water purity. It is particularly well-suited for hobbyists looking to enhance their current RO system into a full RO/DI setup, or for anyone seeking to consistently produce ultra-pure water to ensure optimal health, vibrancy, and stability within their marine aquarium ecosystem.