Reverse Osmosis

Ensure the best water quality for your reef tank with our reverse osmosis deionization systems (RO/DI Systems), designed to remove harmful contaminants like chlorine, chloramines, nitrates, and phosphates from your tap water. Producing zero total dissolved solids (TDS) water is critical for maintaining the health of your aquarium inhabitants, preventing unwanted algae growth, and harmful toxins from building up in your aquarium. Our RO and RO/DI systems are engineered to provide the most reliable filtration, ensuring your saltwater aquarium thrives.

We take pride in offering well-built, leak-free systems that are both affordable and durable. With high-quality filters from trusted brands like GE and DOW, and robust dual O-ring push connect fittings, our systems deliver premium performance. Hand-built in Minnesota, our Bulk Reef Supply RO and RO/DI systems come in various configurations to meet your exact needs. Whether you're setting up a saltwater aquarium or simply seeking safe and reliable drinking water for your family.

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209 Items

  1. BRS 4 Stage RO Only Replacement Filter Kit
    Bulk Reef Supply
    BRS 4 Stage RO Only Replacement Filter Kit
    $32.99 $32.99

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  2. 4 Stage RO/DI Replacement Filter Kit
    Bulk Reef Supply
    4 Stage RO/DI Replacement Filter Kit
    $28.99 $28.99

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  3. Max Silica Removal Filter Kit (for MaxCap Systems)
    Bulk Reef Supply
    Max Silica Removal Filter Kit (for MaxCap Systems)
    $51.99 $51.99

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  4. Matrikx 4 Stage RO (no DI) Replacement Filter Kit
    Bulk Reef Supply
    Matrikx 4 Stage RO (no DI) Replacement Filter Kit
    $22.99 $22.99

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  5. Matrikx 4 Stage RO Drinking Water Replacement Filter Kit
    Bulk Reef Supply
    Matrikx 4 Stage RO Drinking Water Replacement Filter Kit
    $37.99 $37.99

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  6. Kleanwater 4 Stage Upgrade Filter Kit - With Refillable DI
    Bulk Reef Supply
    Kleanwater 4 Stage Upgrade Filter Kit - With Refillable DI
    $44.99 $44.99

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  7. AquaMaxx 4 Stage Upgrade Filter Kit - With Refillable DI
    Bulk Reef Supply
    AquaMaxx 4 Stage Upgrade Filter Kit - With Refillable DI
    $43.99 $43.99

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  8. Kleanwater 6 Stage Upgrade Filter Kit - With Refillable DI
    Bulk Reef Supply
    Kleanwater 6 Stage Upgrade Filter Kit - With Refillable DI
    $86.99 $86.99

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  9. Matrikx 5 Stage Drinking & Reef RO/DI Replacement Filter Kit
    Bulk Reef Supply
    Matrikx 5 Stage Drinking & Reef RO/DI Replacement Filter Kit
    $50.99 $50.99

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  10. BRS 6 Stage Drinking & Reef Replacement Filter Kit
    Bulk Reef Supply
    BRS 6 Stage Drinking & Reef Replacement Filter Kit
    $57.99 $57.99

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  11. BRS 5 Stage RO Drinking Replacement Filter Kit
    Bulk Reef Supply
    BRS 5 Stage RO Drinking Replacement Filter Kit
    $48.99 $48.99

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