4 Stage 150GPD Plus Water Saver RO/DI System - Bulk Reef Supply

4 Stage 150GPD Plus Water Saver RO/DI System - Bulk Reef Supply
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  • 4 Stage 150GPD Plus Water Saver RO/DI System - Bulk Reef Supply
  • 4 Stage Water Saver Parts Kit

4 Stage 150GPD Plus Water Saver RO/DI System - Bulk Reef Supply

100% Recommend this to a friend (4 of 4)

SKU: 210774

reg. $219.99

Special Price: $186.99

In Stock: 86
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Quick Overview

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 Plus Water Saver RO/DI Features: Produce 150 GPD of product water without any more waste water than a 75 GPD membrane would produce.

  • Float Valve

  • Dual TDS Meter

  • Glycerin Filled Pressure Gauge

  • Pre-installed Automatic shut-off valve

  • Pre-installed Flush Kit

  • Multiple source water connections

  • Drain/waste 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


Full Details

BRS 4 Stage Plus Water Saver RO/DI Owners Manual

Dow Filmtec Membrane BW60-1812-75


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 an actual 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

Dual 75 GPD Dow Filmtec Membranes NSF 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 can 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 start looking at your TDS meter.
For more info on Color Changing DI Resin - Click Here


Need Replacement Filters? Click Here


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 Plus Water Saver RO/DI System Recommended Conditions:

  • Minimum Water Pressure - 65 PSI
  • Max Water Pressure - 90 PSI
  • Recommended Water Temperature - 77°F
  • Recommended Max TDS - <200ppm

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


4 Items

  • Great product By Felix on 10/9/2017

    This is a great product at a great price. I make water in no time. Installation was easy with good instructions.
  • Great RO For High TDS Well By Windstar on 8/21/2017

    This is the perfect RODI unit for my situation. My GH and KH were off the charts. My pH was well over 8 and this unit is delivering me no TDS water with a pH of 6.0. Perfect for reconstituting for my exact needs. Very solid build and a 2to1 waste to RODI water ratio for me. Thanks for this perfect fit BRS, you are the best.
  • Awesome Product!!! By James on 8/7/2017

    I've used other RODI units and none of them compare to this one. Great unit. And better yet, the media doesn't break the bank.
  • Awesome Unit By Kurt on 7/19/2017

    I have this exact unit. Been using it for 2 years. Absolutely love it. Super easy to setup. I live in an apartment and I have this hooked up under my bathroom sink. No issues at all and making your own saltwater is the way to go for sure. The float value is definitely worth having so you don't flood your place when filling up your water change container. I would highly recommend this. Thanks BRS!


Ask a question

Product Questions

Can I use this 4 stage RO/DI filter system to filter my drinking water?
Question by: Lori on May 16, 2017 2:58:00 PM
Our Plus systems are not really intended for use in producing drinking water. The TDS meters, pressure gauges, and flush valves do not have NSF certification. Additionally, it's not recommended to use DI filtered water for drinking purposes, so you would want to bypass any DI filtration you may have when producing drinking water.

We do offer a RO/Drinking water systems here:

Have a great day!
Answer by: Zack (Admin) on May 18, 2017 3:33:00 PM
Would you please help me this. Can RO/DI system use softwater make RO/DI water for reef tank
Question by: Hung Nguyen on May 14, 2017 12:08:00 PM
Hey there,
The RODI system will work great with your softened water!

Have a great day!
Answer by: Zack (Admin) on May 17, 2017 12:07:00 PM