Matrikx 4 Stage RO/DI Replacement Filter Kit

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Matrikx 4 Stage RO/DI Replacement Filter Kit

97% Recommend this to a friend (57 of 59)

SKU: 200104
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Quick Overview

This kit works with the BRS 4 Stage Value RO/DI System and BRS 4 Stage Value PLUS RO/DI System. This kit includes:

  • Purtrex 5 Micron Sediment Filter

  • MATRIKX CTO 5 Micron Carbon Block

  • 1.25 lb. Color Changing DI Resin Refill

We recommend changing sediment filters when they become visually dirty or there is a noticeable drop in pressure. Change carbon blocks every 6-12 months depending on use. This kit does not include a membrane filter as they need replacement every three years or so, depending on water and set up.


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Full Details

Recommended Installation for this package*

  • Stage One - Purtrex 5 Micron Sediment Filter
  • Stage Two - MATRIKX CTO 5 Micron Carbon Block
  • Last Stage - DI Resin

Our filter kits feature some of the most widely used and trusted brands in the world including GE, KX Technologies and Pentek. The 10” filter size is the industry standard and will fit our systems as well as virtually every brand of RO system that uses similar looking carbon blocks.  Most of the filters included in our kits are made in the USA, NSF Certified or WQA Gold Seal Certified and Manufactured using FDA-compliant materials.

*This is our recommended filter arrangement and we have found to be the best combination for the most common installations and water conditions. If you have something unique about your water supply or installation please contact customer service and one of our WQA certified water specialists will be able to assist you. Our onsite chat feature is the quickest way to receive advice but we are available to assist via the phone and email as well.


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  • AWESOME PRODUCT! By Josh on 1/17/2015

    Bought one of these several months ago, finally starting to show signs of needing replacement. I do weekly water changes, and am just now starting to see tds. Long lasting filters and DI resin!
  • Great By daniekor on 1/13/2015

    Very easy to do with no guess work.
  • Great Product By Stephen on 12/28/2014

    I have been using these refill kits and this makes my third replacement since my city water quality is the pits, I have to replace more often.
  • Great product. By Hjimenez315 on 12/27/2014

    Great product, use it for two years straight and without any problems whatsoever, all my coral and fish are doing great. I definitely recommended it to all my friends.
  • Matrikx 4 Stage RO/DI replacement filter kit By Mzkrista on 11/17/2014

    Awesome refill kit! Easy to use!
  • the BEST By Cougareyes on 11/6/2014

    simply the best most economical RO filter kit you can get. TDS always 0 and last for a very long time.
  • Worked like a champ By Marty on 10/8/2014

    Arrived right on time. I purchased the BRS RODI 4 Stage system about 10 months ago. It was time to change the filters. Very easy to install no leaks works great. RO is now zero out.
    Thanks BRS again.
  • one stop shop for your four stage ro/di value plus kit By Connor on 9/17/2014

    packaged arrived in tip top shape. I like the packing never do I have to worry about anything getting damaged from bulk reef supply. Everything I've ordered was just plug and play.
  • works great By John on 8/23/2014

    been using this since I got the filters.
  • Easily packaged By Barracuda68 on 7/11/2014

    Great kit to renew your filters.
  • Perfect fit By Laredo300c on 6/18/2014

    Well i ordered this kit as i was reaching my first year with my ro/di unit. I only mix 15 gallons a week. Filter kit arrived super fast and was a breeze to install. Of course when i was ready, i couldnt find my canister wrench, so one quick order and my wrench was on its way. Took 10 minutes tops and make sure you flush pout the unit.
  • Quality control By CP on 5/29/2014

    Got the filters fast shipping was excellent the only problem is this is the second time I've done this the first filter fit correctly the second time the carbon block was 1/8 inch too short and does not seal very well wouldn't trust it from pure water

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