Browse Reef Pure RO/DI systems, replacement filter cartridges and service kits at The Tech Den Australia. This collection brings together reverse osmosis and deionisation equipment for preparing aquarium water, with Essentials, Essentials Plus, Premium and Expert systems alongside maintenance supplies.

Systems and replacement supplies

• RO/DI systems: four-stage and six-stage options, with listed capacities from 50 GPD to 400 GPD. Compare the individual model specifications and included equipment.
• Filter cartridges: 10-inch x 2.5-inch sediment, carbon block and granular activated carbon cartridges.
• DI resin: mixed-bed colour-changing deionisation resin in 540g and 3.5kg packs.
• Service kits: model-specific replacement kits for four-stage Essentials/Essentials Plus, four-stage Premium and six-stage Expert units.
• Accessories: a tap-to-tubing fitting and a housing wrench for compatible 10-inch x 2.5-inch housings.

Choose the right system and parts

Check your system model, stage configuration, membrane rating, cartridge dimensions and service-kit contents before ordering. Kits for different units are not automatically interchangeable.

GPD figures are rated production capacities, not guaranteed daily output. Compare the manufacturer's operating requirements with your source-water conditions, water pressure and intended installation. Use water testing and the system's maintenance instructions to assess filter and resin replacement needs rather than relying on a fixed replacement schedule.

Prepare the filtered water for its intended aquarium use. RO/DI water is not a finished marine salt mix; follow the requirements of your livestock and setup when choosing salt or remineralisation products.

The RO/DI system listings in this collection are marked as bulky items with additional delivery charges calculated at checkout. Check each product's specifications and delivery details before ordering.