Matrikx 5 Stage RO/DI Replacement Filter Kit

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Matrikx 5 Stage RO/DI Replacement Filter Kit

100% Recommend this to a friend (109 of 109)

SKU: 200102

reg. $34.99

Special Price: $29.74

In Stock: 167
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Quick Overview

This kit works with all BRS 5 Stage RO/DI Systems along with most other RO/DI systems that use 10" canisters.

This kit includes:

  • Purtrex 5 Micron Sediment Filter

  • MATRIKX CTO 5 Micron Carbon Block

  • MATRIKX CTO 1 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.


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 1 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 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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  • Worked as expected By Mark on 9/21/2017

    Been a few years since I have run my RO/DI system and I was a bit nervous it may not work anymore. Bought all new filter media and the filters worked perfectly. Great item.
  • Great value By Ron on 6/21/2017

    Great price for a nice 5-stage filter kit. Have purchased this kit several times and it will continue to be my go to replacement kit.
  • great value By denbf58 on 4/15/2017

    great price and quality product what more needs to be said
  • Great Product By DK on 1/13/2017

    Great product and cheaper than other places. The DI resin was a little messy to replace but well worth the trouble to save a little cash.
  • Works great By Jack on 9/7/2016

    Easy to use,wouldn't buy from anywhere else
  • Excellence By Greg on 3/7/2016

    Great products, great staff, very knowledgable about any issue you may hay.
  • High quality and Perfect fit By Carpathian on 10/26/2015

    These seemed to be made very well and fit perfectly. Very easy to replace!
  • YES! By Sapelo on 7/15/2015

    Great product at a great price.
  • Quick delivery & well marked filter packaging. By Roco on 7/14/2015

    Received the package well before it was expected which allowed me to service the unit in our timeline. The price was very reasonable. The shipping box could have been a bit more substantial.
  • Great Product By JB on 5/17/2015

    Can not get a better deal on RO DI items. Work great.
  • 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.


Ask a question

Product Questions

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.
Question by: Charlene on Oct 16, 2013 10:00:00 AM
Hey Charlene,
If you have the 5 stage standard unit this would be exactly the filter kit you would need!
Answer by: Bulk Reef Supply on Oct 16, 2013 10:00:00 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.
Question by: Cal on Jan 3, 2014 9:50:00 AM
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.
Answer by: Bulk Reef Supply on Jan 3, 2014 9:50:00 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.
Question by: Dln on Nov 24, 2013 7:49:00 AM
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).
Answer by: Bulk Reef Supply on Nov 24, 2013 7:49:00 AM
I don't have a brs rodi unit, will this work with mine? I have an aquafx unit
Question by: Minh on Feb 11, 2014 3:57:00 PM
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 :-)
Answer by: Bulk Reef Supply on Feb 11, 2014 3:57:00 PM
Hi, I have The BRS 4 stage value water saver plus Ro/do 150gpd. I am needing to change all filters. Which filter set do I need?
Question by: Christina on Jan 14, 2016 12:31:00 PM
Great question!
You will want the 4 stage value replacement filter kit (link below) and possibly the replacement 75 GPD membranes.
Answer by: Connor (Admin) on Jan 14, 2016 4:54:00 PM
I have Spectrapure 4 stage Rodi system. It's 16" canisters. You think I'll be available to use this matriks as a replacement for my unit!?
Question by: Jerry on Nov 18, 2017 4:42:00 PM
Are you measuring the outside height of the canister? RO filters are measured by the actual filter inside of the canister. Traditional 10" filters will actually measure around 9.5" tall. If your filters are around 9.5" tall then the Matrikx filters should work great in your system.
Answer by: Charlie (Admin) on Nov 18, 2017 6:40:00 PM
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?
Question by: Tiffany on Jun 12, 2014 9:21:00 AM
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:
Answer by: Bulk Reef Supply on Jun 12, 2014 9:21:00 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?
Question by: Chris on Nov 16, 2013 10:56:00 AM
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.
Answer by: Bulk Reef Supply on Nov 16, 2013 10:56:00 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?
Question by: Steven on Apr 25, 2014 7:42:00 AM
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!
Answer by: Bulk Reef Supply on Apr 25, 2014 7:42:00 AM