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About This Item

Details

  • Premium research-grade, low-ash, highly porous carbon for aquatic environments
  • Strains and absorbs tiny particles
  • Removes heavy metals, odors, discolorations, organic contaminants and pollutants leaving water clear and keeping conditions safe for fish
  • Improves water clarity, color & removes odors
  • Does not raise phosphate levels

Instructions

Learn More About Fluval From Our Team of Experts

Questions & Answers

4 Customer Questions


Are these the replacement for fluval 306?

Answer by Chewy • Jul 25, 2020
This filter media is only compatible with the following Fluval filter models: 106, 206, 306, 406, FX5, 105, 205, 305, 405, 104, 204, 304, and 404.

How many gallons does each pack treat?

Answer by Chewy • May 02, 2020
For maintenance, it is recommended to change carbon filter monthly. Do not replace all filter media simultaneously. Stagger media replacement to ensure constant bacterial populations.

Can this be used for the Fluval 407?

Answer by Chewy • Dec 28, 2019
This filter media is not suitable with the Fluval 407 Performance Canister Filter.

Is this the correct size for the fluval flex 15 gallon aquarium?

Answer by Chewy • Aug 23, 2018
This filter would not be suitable. The Fluval C2 Activated Carbon Filter Media 3 x 45 gram would be compatible.
4.8
Rated 4.8 out of 5 stars
35 Ratings

14 Customer Reviews



Rated 2 out of 5 stars
By Niccole on Dec 19, 2025

the item are to big for my filter.

the company needs to make smaller carbon filters for the Fluval Flex 9 gal tank.

the company needs to make smaller carbon filters for the Fluval Flex 9 gal tank.


Rated 5 out of 5 stars
By John on Sep 29, 2025

Fluval carbon filter

These packets are really convenient. Drop in fill your tank up would highly recommend.

These packets are really convenient. Drop in fill your tank up would highly recommend.


Rated 5 out of 5 stars
By Thomas on Aug 25, 2025

,Fast shipping

Fluval makes great prouducts,

Fluval makes great prouducts,


Rated 5 out of 5 stars
By JOSEPH on Feb 20, 2025

e3xcellent product

always consistant in quality

always consistant in quality


Rated 5 out of 5 stars
By allieazalea on Jun 26, 2020

extremely affordable

Long lasting micro water polishing media. Soft, plump bag of carbon

Long lasting micro water polishing media. Soft, plump bag of carbon


Rated 5 out of 5 stars
By Scott on May 19, 2020

Great product

I have found out over the many years of having tropical that you can not ever go wrong with any product that Fluval makes.

I have found out over the many years of having tropical that you can not ever go wrong with any product that Fluval makes.


Rated 5 out of 5 stars
By Michael on May 8, 2020

fluval filters

unbelievable price, i have 3 aquariums and was buying in a chain pet store and was paying about 8 dollars a box, These are only $ 2.32

unbelievable price, i have 3 aquariums and was buying in a chain pet store and was paying about 8 dollars a box, These are only $ 2.32


Rated 5 out of 5 stars
By Walley on Apr 16, 2019

a great product

Very pleased and agreat product really priced well

Very pleased and agreat product really priced well


Rated 5 out of 5 stars
By Randy on Dec 3, 2018

works great!

what is needed for the large size filter! works great!

what is needed for the large size filter! works great!


Rated 5 out of 5 stars
By Amy on Aug 20, 2018

Great product

Have three fish tanks and use fluval products for all of them.

Have three fish tanks and use fluval products for all of them.