Whisper® EX Carbon Filter Replacement Cartridges

Product No. 26330-00

Now a Carbon Filter as innovative as the Whisper® EX Filtration System it's designed to fit. Tetra Carbon Filters' layers of multi-density floss effectively trap even the smallest particulates while activated carbon rapidly eliminates odor, discoloration, impurities, and toxins.

The result? Water that's clear, healthy, and polished.

Medium EX - Whisper EX20
Large EX - Whisper EX30, EX45 & EX70


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  1. Coarse layer - Removes larger particulates.
  2. Activated Carbon - Rapidly removes odor, discoloration, impurities and toxins leaving your water clear, healthy and polished.
  3. Multi-density layer - Specially designed to capture a full range of particulates giving you unmatched water clarity.

Rated 3 out of 5 by from QUIET I just installed this unit and am waiting for an opinion. The salesman at Petco assured me I could assemble filters from the older style Bio-Bags. The shape is different but I'm creative! The cost of new filters is too high for the ones that are made for this filter system. Please offer a quantity value pack.
Date published: 2018-06-19
Rated 4 out of 5 by from EX filters Takes a while after I change them to get my tank clear again. Like others have mentioned alittle pricey.
Date published: 2018-01-15
Rated 1 out of 5 by from not worth the money I have a couple of these units. While they are quiet they do not allow the bio bags that you can assemble yourself (which saves a fair bit of money) and as has been said by others the price of replacements filters soon equals the cost of the unit. I am switching back to my other units with cartridges that I can assemble.
Date published: 2017-03-31
Rated 2 out of 5 by from quiet Does an ok job. My biggest disappointment is the cost of replacement filters & parts. Buying filters a couple of times is like buying the entire system all over again. Might as well just buy a new filtration system & save this one for backup!
Date published: 2016-05-02
Rated 2 out of 5 by from Bad shape The ROUND BOTTOM requires that you buy only these proprietary replacement cartridges. They're hard to find, expensive and only seem to come in a 2 or 4 pack. I'm throwing away the EX 30 power filter for this reason.
Date published: 2016-01-23
Rated 2 out of 5 by from Works okay, but limits options I prefer not to use carbon in my filters because it removes medications (I only add it after a treatment when I wish to do so). I would like to see a non-carbon option (such as the "you-assemble" value packs for the older Whisper filters, which I just left the carbon out of). Right now I'm treating a tank for ich, and I had to rig up a filter out of the wrong-shape filter inserts so I would still have some filtration during treatment. How annoying! However, I gave the product two stars for convenience alone, because that's what's most important to some people.
Date published: 2015-03-10
Rated 4 out of 5 by from I love it but pricey!! I have a ex 70, i love it. It is so quiet and keeps my tank crystal clear. I just wish that could make the filter cartridges for it cheaper, for a 2 pack its $8-$10. For a 4 pack its $15-$20. a little pricey.
Date published: 2014-12-08
Rated 4 out of 5 by from Frustrating that they don't make the economy packs for this model! These filters are great, but it's very frustrating that they don't make economy packs for this model. Also, only having pre-made filters available is inconvenient when there's a situation where one needs to run a carbon-less filter.
Date published: 2014-09-05
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