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The Best Fish Tank Filter Cartridge 2019 – Secret Of Ever-Fresh Water

Buying a fish tank filter is not enough: you need to replace the cartridges regularly as they get clogged with debris. That ensures proper work of filter and optimal cleaning level. How to select the best fish tank filter cartridge to keep aquarium water ever-clean? This ultimate guide discloses the secret of successful shopping and observes top-5 models for 10-gallon tank filters.

Table of Contents:

What Is A Fish Tank Filter Cartridge?
Compare The Best Fish Tank Filter Cartridges
Top-5 10 Gallon Fish Tank Filter Cartridges
1. Tetra Whisper Replacement Carbon Filter Cartridges, Small, 6 Count
2. Tetra Whisper Replacement Carbon Filter Cartridges, Small, 6 Count
3. MarineLand Rite-Size Penguin Power Filter Cartridges
4. Tetra ReptoFilter Filter Cartridges, With Whisper Technology
5. Marina I25 Replacement Power Cartridge
Frequently Asked Questions
Our Recommendations & Conclusion

What Is A Fish Tank Filter Cartridge?

Every aquarium water filter has filtering media inside: this is what ensures chemical, biological, and mechanical cleaning. From time to time, old dirty and clogged filtering media layers that come in cartridges should be replaced with new ones.
There are several types of filter cartridges depending on the type of cleaning performed:

  • Mechanical (removes sand, debris, large particles);
  • Biological (kills bacteria);
  • Chemical (removes toxic chemicals, such as ammonia);
  • Mixed (several types of media).

Compare The Best Fish Tank Filter Cartridges

Brand

 

 

Types of filtration

Filters in package

Which system is it designed for?

Material

How often they should be changed?

Capacity of tank

Size

Tetra Whisper Replacement Carbon Filter Cartridges

BUY NOW AMAZON

Mechanical + chemical

6

Whisper 1-3i filter system

Ultra-activated carbon + dual sided mesh

About 1 week

3-5 gallons

Small (~2.2 x 4 inches)

Aqueon Replacement Filter Cartridges

BUY NOW AMAZON

Chemical, Biological, Mechanical (Bioholster)

6

Aqueon QuietFlow Filter

Ultra-activated carbon + fine mesh

4-6 weeks

Up to 20 gallons

Medium (~4.9 x 6 inches)

MarineLand Rite-Size Penguin Power Filter Cartridges

BUY NOW AMAZON

Chemical, Biological, Mechanical

6

Penguin filters

Ultra-activated carbon + fine mesh + biological layer

4 weeks

10-20 gallons

Medium (~4.5 x 6.5 inches)

Tetra ReptoFilter Filter Cartridges, With Whisper Technology

BUY NOW AMAZON

Mechanical + chemical

3

ReptoFilter

Ultra-activated carbon + fine mesh

4 weeks

20-40 gallons

Medium (~3.5 x 6.5 inches)

Marina I25 Replacement Power Cartridge

BUY NOW AMAZON

Mechanical + chemical

2

Fluval Marina i25 filter

Ultra-activated carbon + zeolite chamber + mesh

4 weeks

10 gallons

Large (~3.1 x 7 inches)

Top-5 10 Gallon Fish Tank Filter Cartridges

To review the best cartridges, we have analyzed several important characteristics, including size, types of filtration, durability, and quality of media used.

Tetra Whisper Replacement Carbon Filter Cartridges

Tetra Whisper Replacement Carbon Filter Cartridges, Small, 6 Count

Review

If you have a small aquarium up to 5 gallons, this is the best fish tank filter package you can find. Cheap, ready to use, the filter does what’s said on the label. Thanks to the activated carbon, it removes odors and chemicals from the water, while the fine mesh catches debris. The 6-pack lasts for at least two weeks, if you have a large aquarium, though Tetra recommends changing filters once in a week. The set is designed for Whisper 1-3i filter system.

Our opinion

Purchase of this pack is justified for owners of small fish tanks. It lacks biological filter though, so be ready to buy additional media.

PROS

  • Non-expensive;
  • Easy to install;
  • Removes odors and discoloration.

CONS

  • No biological filtration;
  • Clogs quickly.
Aqueon Replacement Filter Cartridges

Aqueon Replacement Filter Cartridges

Review

These cartridges contain activated carbon to remove odors and harmful chemicals, and feature a thin mesh for proper mechanical cleaning. They are ready to use and should be simply replaced by aligning the cartridge bottom key slot. Cartridges last 4-6 weeks each, which is very convenient.

Our opinion

Great choice for fish tanks up to 20 gallons – the 6-pack totally justifies its cost. However, some users claim the cartridges last 3-4 weeks.

PROS

  • Holds beneficial bacteria;
  • Lasts about a month;
  • Easy to replace.

CONS

  • Should contain more activated carbon;
  • Extra biological filter media should be used with the cartridges.
MarineLand Rite-Size Penguin Power Filter Cartridges

MarineLand Rite-Size Penguin Power Filter Cartridges

Review

If you need a filter cartridge for fish tank with all kinds of filtration, opt for the 6-pack from MarineLand. The cartridges contain premium activated carbon, fine mesh, and an extra layer for biological filtration. They’re easy to install and last 1 month.

Our opinion

Excellent cartridges for Penguin filters with a great price/quality ratio.

PROS

  • Optimal price and quality ratio;
  • 3 types of filtration.

CONS

  • Some users claim they last less than a month.
Tetra ReptoFilter Filter Cartridges With Whisper Technology

Tetra ReptoFilter Filter Cartridges, With Whisper Technology

Review

Efficient and long-lasting, Tetra cartridges contain ultra-activated carbon to absorb odors and toxic chemicals – many turtle owners claim that these filter bags remove all smell and debris. Cartridges are very easy to install and last for about a month.

Our opinion

A bit overpriced without a discount, but the pack will be enough to keep the turtle tank clean for 3 full months.

PROS

  • Efficient removal of dirt and odors;
  • Easy to install.

CONS

  • No biological filtration.
Marina I25 Replacement Power Cartridge

Marina I25 Replacement Power Cartridge

Review

Designed specifically for Marina i25 internal filter, these cartridges have 2 types of filtration thanks to activated carbon and zeolite chamber to remove toxic ammonia. Cartridges last about 4 weeks each and catch debris perfectly.

Our opinion

Non-expensive and efficient option for marina i25 filter – we highly recommend this 2-pack.

PROS

  • Cheap;
  • Efficient.

CONS

  • No biological filtration.

Frequently Asked Questions

Q: How To Clean A Fish Tank Filter Cartridge?

A: Cartridges are not cleaned – they are replaced after becoming clogged. However, the filter itself should be cleaned from time to time (for example, when you’re replacing the water in the fish tank).

Q: How To Install Fish Tank Filter Cartridge?

A: Rinse filter cartridge under cool tap water to remove the residues of carbon and other stuff. Open the filter’s lid and insert the cartridge inside after removing the old one.

Q: How Often To Change Filter Cartridge In Fish Tank?

A: Cartridges should be changed at least once in 4 weeks, however, it depends on a variety of factors including aquarium capacity and the quality of water. As a rule, clogged cartridges are replaced when there’s a decreased flow out of the water.

Q: How To Remove A Fish Tank Filter Cartridge?

A: Switch off the filter and open the filter’s lid. Pull a cartridge to remove it.

Q: What Does Filter Cartridge For Fish Tank Do?

A: It removes dirt, debris, chemicals, and odors from water eliminating the discoloration. Some filters also kill harmful bacteria.

Q: How To Replace Fish Tank Filter Cartridge?

A: Switch off the filter and open the filter’s lid. Pull a cartridge to remove it. Wash the filter, if necessary, and place the new cartridge by sliding it in the slot.

Our Recommendations & Conclusion

How to select a filter cartridge fish tank option? It should mostly depend on the type of filter you use. The majority of cartridges are in nearly the same price range: you can get a 6-pack for $7, or a 3-pack for $3-4. Out of all reviewed models, we highly recommend Aqueon Replacement Filter Cartridges. They feature all types of filtration and boast mostly positive reviews.

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