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Matrikx 5 Stage RO/DI Replacement Filter Kit

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Matrikx 5 Stage RO/DI Replacement Filter Kit

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SKU: 200102
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Quick Overview

This kit works with the BRS 5 Stage RO/DI System, BRS 5 Stage PLUS RO/DI System, BRS 5 Stage Water Saver PLUS. This kit includes:

  • Purtrex 5 Micron Sediment Filter

  • MATRIKX CTO 5 Micron Carbon Block

  • MATRIKX CTO 0.6 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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Previously Asked Questions

  • by Charlene on October 16, 2013, @10:00 AM

    Good evening,
    I own the standard RO unit with the DI, it's been roughly a year and I'd like to replace the necessary components in which need to be replaced within this time. Is this the correct kit to purchase? Thank you kindly.

    Bulk Reef Supply Hey Charlene,
    If you have the 5 stage standard unit this would be exactly the filter kit you would need!

    Do you find this question helpful?  Yes   No

  • by Cal on January 3, 2014, @9:50 AM

    In your opnioin about how often should the filters be changed. My TDS meter consistently reads 3 or 4 on the inlet prior to my DI resin and my DI resin needs to be changed about every 6 months so just wondering about the other filters.

    Bulk Reef Supply Hi Cal,
    At the least the prefilters should be replaced yearly but it really comes down to usage. The carbon blocks are good for 6000g of total water (which is waste + product) and the sediment filters should be replaced when they become dirty/clogged. If either is clogged it would generally be visible by a decrease of water pressure on an RO/DI pressure gauge.

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  • by Dln on November 24, 2013, @7:49 AM

    I have the 5 stage ro system. I need replacement filters but I am not sure exactly what I need. I see the kit for the five stage unit. The kit includes a bag of resin. What chamber is that for. Thanks.

    Bulk Reef Supply High there,
    If you have our 5 stage RO/DI system then you would want the 5 stage RO/DI replacement filter kit. The bag is the bag of DI resin which replaces the DI resin on your RO/DI unit (the last stage).

    Do you find this question helpful?  Yes   No

  • by Minh on February 11, 2014, @3:57 PM

    I don't have a brs rodi unit, will this work with mine? I have an aquafx unit

    Bulk Reef Supply HI Minh,
    RO filters are pretty much universal. They will work with your Aquafx unit as well as just about any other unit out there :-)

    Do you find this question helpful?  Yes   No

  • by Tiffany on June 12, 2014, @9:21 AM

    I purchased the 5 stage drinking and reef filter kit and I was wondering why im missing a filter. I have a 5 stage drinking filter system with the one di filter that is separate from the drinking unit. The replacements came with a di package, 5 micron, purtrex 05 micron, chlorine taste and odor reduction, and a .6 micron. When should I replace the other filter and where can I purchase it?

    Bulk Reef Supply Hi Tiffany,
    The filter that isn't included in the kit (which is different then this one, sounds like you have the 5 stage drinking and reef water replacement filter kit) is the 75gpd RO membrane. They only need to be replaced every 3-5 years, or often even much longer if you treat them nicely. They can be found right here in the future:

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  • by Chris on November 16, 2013, @10:56 AM

    I have the 5 stage plus system. I've produced about 10 gal a month since new April 2011. The TDS meter still reads 0 and pressure is good, but they're green, black, and brown. Do I need to replace my filters?

    Bulk Reef Supply Hey Chris,
    Its best practice to replace the sediment filters and carbon blocks yearly if nothing else. Filters like the carbon blocks serve other functions like removing chlorine (which otherwise damage the membrane) and won't show up as TDS when they are depleted. Changing them on a regular basis ensures your not damaging the much more expensive membrane which otherwise should last 3-5 years or even longer.

    Do you find this question helpful?  Yes   No

  • by Steven on April 25, 2014, @7:42 AM

    I have the five stage BRS rodi unit. I've noticed two things:

    1) I last purchased filters a few months ago. The sediment filter is a very very light brown. Yet, counter intuitively, I am seeing the pressure rise. I can easily hit 100PSI, unless I dial my kitchen sink back to about 25% output. Is this normal?

    2) I've owned the entire unit for several years. In that entire time, I've never seen anything more than 1 TDS for the inlet and 0 for the outlet. No matter how long the unit goes without servicing, that seems unlikely. Is the meter faulty?

    Bulk Reef Supply Hi Steven,
    1) Eventually that sediment filter will need changing as it gets very filthy, but if the pressure is increasing that's simply because the input water is. High pressure is a good thing but you do want to turn the sink down to keep it under 80.

    2) The TDS meter on the unit measures the input of the DI (which is actually the output of the membrane) and the output of the DI. Considering your high water pressure and the fact that the water has already gone through 4 of the 5 stages of filtration, its not that unsual to see a number like 0-1 on the "in" side of the DI resin. Its likely just an indicator that your tap water was fairly low in TDS to begin with. The fact that the output number reads 0 and the resin hasn't turned entirely yellow also support this. Its a good thing, most folks would love to experience this!

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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
  • Stage Three - MATRIKX CTO 0.6 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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  • excellent! By jessesoto33 on 4/3/2015

    best product hands down and price is best also I did the shopping for you!
  • I have every reason to believe that this is a very solid product at a really decent price. By bilferd on 3/31/2015

    First of all, it came with plenty of DI resin (I had to throw a little bit away after packing it well.) Made in USA, which is typically a really good thing. My TDS meter reads 000ppm. The price is right. It just seems like a really good value. The filters seem high quality to the touch. I might be a little bias because I pick it up in person. I haven't really seen what it costs to ship under $175.
  • Matrox 5 stage RODI replacement filters By gene405 on 3/19/2015

    Fit my BRS RODI perfectly great item
  • Great kit By Christopher on 2/11/2015

    Easy kit to order and includes all you need for your periodic refreshment of your RO/DI unit.
  • Rick Needs to Learn How to Read By Paul on 1/29/2015

    "This kit does not include a membrane filter as they need replacement every three years or so, depending on water and set up."

    If you read to the end of the listing, you will see that it does not include the membrane filter. Why is that? Well, the membrane filter needs to be replace every 3 years or so. The other filters are replaced much more frequently . . . every 6-12 months. I've been using a RO/DI filter for approximately 2+ years and have used this particular replacement kit each time. It worked great when I had a 150 gallon saltwater tank. I've gotten out of saltwater and am now using RO/DI water in my Cichlid tank. This replacement kit has worked well for my needs.
  • Good but missing a part or needs RE Labeled By Rick on 1/1/2015

    4 parts for a 5 stage system. Some one needs to learn to count
  • perfect By brian on 12/14/2014

    Everything you need and reasonably priced
  • Great Product! By Aceone on 11/19/2014

    Everything you need right there!!!
  • Everything You Need By Ryan on 11/13/2014

    This Replacement Filter Kit for my RO/DI system was everything I needed, and we've ordered it every single time when replacement was due. The kit shipped quickly, and was easy to understand and use. The how-to video's verified that we replaced everything correctly and with the DI Resin having a little extra, we were a little nervous that we did something incorrectly. BRS confirmed we did everything correctly, and a little excess was okay. Again, the BRS recommended replacement kit was much easier than ordering each piece separately!!
  • Great Product! By Aceone on 11/7/2014

    i use these and only these filters in my BRS 5 stage RODI unit. It is the best price on the internet,
  • Great filters By Earl T. on 10/12/2014

    I use these and only these filters in my BRS 5 stage RODI unit. It is the best price on the internet, you know you are getting what is made for your filtration system.
  • great for replacing my rodi filters By Kevin on 8/23/2014

    it came with perfect instructions very simple to switch out filters but
    i'm giving this filter replacement 4 stars because i believe it should come with the di resin sponges. if you read this i suggest you buy the replacement di sponges or maybe bulk reef should add them to this package.

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