AquaticLife Twist-In Compact 4-Stage RO/DI Unit - Product Spotlight

This package combines the AquaticLife Twist-In Compact 4-Stage RO Unit, 100 GPD with an AquaticLife Twist-In Cartridge Head and a AquaticLife Twist-In Replacement Color Changing Deionization Filter (Item# 330380) to make a 5-Stage RO/DI Unit.

Why Should You Use Two DI Cartridges?
DI resin doesn’t go bad all of a sudden. Instead, it fades and will start letting more waste through and need replacement. If you just have one DI stage, you will need to replace the DI when the resin is still somewhat effective, but not completely effective. With two cartridges, you can run your RO system until your first cartridge is completely depleted, and then move your second cartridge to the first spot and add a fresh cartridge to the second canister. This means fewer DI cartridge replacements, saving you time and money.