Bulk Reef Supply

4 Stage Value 75GPD RO/DI System - Bulk Reef Supply

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    BRS 4 Stage Systems are perfect for reefers who have water treated with chlorine or relatively clean well water. The 4 stage systems are self-contained on a single bracket making them ideal for tight spaces or where a non-permanent connection may be required. Installing a RO/DI system only takes a few minutes and can be done very easily without any permanent modifications to your home or the plumbing.

    4 Stage Value RO/DI Features:

    • Multiple source water connections
    • Mur-lok Push Connect dual EPDM O-Ring fittings
    • 10 Ft Each of 1/4" Blue, Red and Black Tubing
    • Pre-installed NSF Certified Filters NSF Certified


    Lifetime Warranty All Bulk Reef Supply RO/DI Systems are covered by our Limited Lifetime Warranty.


    Bulk Reef Supply RO/DI systems only use the latest filters and components in Reverse Osmosis technology. We have designed our RO/DI units especially for reef tanks, but they can produce perfect water for other types of saltwater and freshwater aquariums too. If you have a well, or you are connected to city water we provide a variety of RO/DI systems that will fit your aquarium's needs.


    4 Stage RO/DI Systems - Perfect for city water that is treated with low amounts of chlorine, or well water with very minimal contaminants.
    5 Stage RO/DI Systems - Our most popular system handles most types of well water along with most types of city water treated with chlorine including small amounts of chloramines.
    6 Stage RO/DI Systems - If you are not sure what is in your water, or it contains excessive amounts of TDS or hard to remove contaminants like chloramines, phosphates, nitrates, silicates, etc. The BRS 6 Stage systems are designed to treat any water your home may have effectively. The Dual DI stage helps with the hard to remove ions like ammonia, phosphates, silicates, etc.


    4 Stages of Filtration

    Stage 1

    Purtrex 5 Micron Depth Sediment Filter NSF Certified

    Sediment filters trap debris and other free-floating particles that would normally clog expensive carbon blocks and foul membranes. Purtrex filters are a true depth filter with a graded density that progressively gets tighter through as water passes through the filter allowing them to last longer than the competitors.

    Stage 2

    BRS 5 Micron VOC Block NSF Certified (Chlorine 15,000 @ 1 GPM)

    Our VOC carbon blocks are specially formulated to remove and reduce chlorine and volatile organic compounds from household water.

    Stage 3

    75 GPD Dow Filmtec MembraneNSF Certified (up to 99% rejection rate*)

    DOW is hands down the industry leader for residential RO membranes. The 75 GPD Filmtec membrane can remove up to 99% of contaminants from traditional household drinking water. All membranes do require pressure to operate correctly, and DOW's membrane only requires 50 PSI of feed pressure to operate efficiently. For more info on DOW membranes - Click Here

    Stage 4

    Nuclear Grade Color-Changing Deionization Resin

    Deionization resin is the final stage of the RODI system and will polish your water down to 0 TDS. The DI resin is a mixed bed with a color changing indicator to let you know when it is becoming depleted. The resin starts as a dark blue color that will turn gold when as it becomes exhausted and is a good indicator to let you know when to it should be replaced.
    For more info on Color Changing DI Resin - Click Here


    Need Replacement Filters? 4 Stage Chlorine/VOC Filter Kit


    BRS RO/DI 4 Stage System Comparison

     BRS 4 Value RO/DI SystemsBRS 4 Plus RO/DI SystemsBRS 4 Plus Water Saver RO/DI Systems
    Gallons Per Day
    75 GPD
    75 GPD
    150 GPD
    Sediment Filter
    Purtrex 5 Micron Depth Sediment Filter 
    Purtrex 5 Micron Depth Sediment Filter 
    Purtrex 5 Micron Depth Sediment Filter 
    Carbon Block
    BRS VOC 5 Micron Carbon Block 
    BRS VOC 5 Micron Carbon Block  
    BRS VOC 5 Micron Carbon Block  
    75 GPD Dow Filmtec Membrane

    75 GPD Dow Filmtec Membrane

    (2) 75 GPD Dow Filmtec Membranes

    Single DI Stage with Refillable Cartridge

    Single DI Stage with Refillable Cartridge

    Single DI Stage with Refillable Cartridge

    Auto Shut Off Valve
    Canister Wrench
    Laundry Tub Connection Adapter
    Chrome Faucet Diverter Valve
    Chlorine Test Strips  
    Glycerin Filled Pressure Gauge  

    Flush Kit  
    Dual Inline TDS Meter  
    Ball Valve  
    Drain Saddle Clamp  
    EZ Angle Stop Adapter  
    Self-Piercing Saddle Valve  
    Float Valve    
    150 GPD Water Saver Upgrade Kit    
    Dimensions 16" x 6.25" x 15.5" 16" x 7" x 15.5" 16" x 7" x 18"


    4 Stage Value RO/DI System Recommended Conditions:

    • Minimum Water Pressure - 50 PSI
    • Max Water Pressure - 90 PSI
    • Recommended Water Temperature - 77°F
    • Recommended Max TDS - <300ppm

    Water pressure can be increased by adding a booster pump before your RO/DI system if a pressure increase is required. Low pressure will cause slow production of product water, with excess production of waste water. Pressure over 90 PSI may cause damage to the RO/DI units filters and components.


    *DOW Filmtec 75 GPD Membranes have a 96% - 99% typical stabilized salt rejection rate that can be reproduced through the following conditions;

    • Source Water Pressure - 50 PSI / Membrane
    • Source Water Temperature - 77°F
    • Source Water TDS - 250ppm Softened Tap Water
    • Recovery - 15%
    • Minimum Salt Rejection - 96%

    For more info on DOW Filmtec BW60-1812-75 Membrane - Click Here


     BRS 4 Stage Value RO/DI System Instructions

     Dow Filmtec Membrane BW60-1812-75

    More Information
    Product Name 4 Stage Value 75GPD RO/DI System - Bulk Reef Supply
    SKU 210772
    Short name for grouped product 75 Gallon Per Day Value
    UPC 853710007735
    Best Value No
    Best Performer No
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