Hallmark De-ionized (DI) Resin Filled Housing

Our 9-inch transparent Deionized (DI) Resin Housing is the perfect addition to any Reverse Osmosis (RO) system, delivering water with zero Total Dissolved Solids (TDS) ideal for fish aquariums and sensitive applications. Filled with high-quality DI resin, this unit effectively removes any remaining dissolved ions and minerals, ensuring pure, mineral-free water that supports the health of aquatic life. The transparent housing allows easy monitoring of resin status, making maintenance and replacement straightforward.