AquaClear Biomax Filter Insert

By AquaClear
Rated 4.7692 out of 5 stars
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AquaClear Biomax Filter Insert, Size 20 slide 1 of 2
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AquaClear Biomax Filter Insert, Size 20 slide 1 of 2

$5.99Chewy Price
$5.69Autoship Price
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Frequently Bought Together

This Item - AquaClear Biomax Filter Insert, Size 20
Rated 4.7692 out of 5 stars
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Total Price: $0.00

About This Item

  • Biological filter media keeps the aquarium clean and healthy, maintains good water quality and keeps fish thriving.
  • BioMax’s complex bio-ring pore structure allows beneficial, toxin-reducing bacteria to thrive, increasing biological filtration efficiency by up to 30%.
  • Good bacteria breaks down harmful ammonia and nitrite from fish waste and other organic matter and starts the essential nitrogen cycle.
  • Prepackaged in a mesh bag for convenience and designed to fit the AquaClear Mini CycleGuard Power Filter, Size 20.
  • This product is suitable for use in both fresh and saltwater aquariums.
Play Video: Learn More About AquaClear From Our Team of Experts
Learn More About AquaClear From Our Team of Experts

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Fish TypeTropical Freshwater, Marine FishTropical FreshwaterTropical FreshwaterTropical FreshwaterTropical Freshwater
Aquarium TypeFreshwater, SaltwaterFreshwaterFreshwaterFreshwaterFreshwater
MaterialMesh, Synthetic FabricMesh, Synthetic FabricMesh, Synthetic FabricFoamFoam

Questions & Answers

2 Customer Questions

How often do you recommend replacing?
Answer by ChewyMar 15, 2019
In general, you should replace the Biomax Filter every 6 months. It's best to change only a part after 6 months, then wait a couple of weeks and replace the rest. This replies to all filter media. It's very important to stagger the filter media changes.

are this just the bags or do they have biomass in them?
Answer by ChewyApr 05, 2022
This is the actual Biomax media that comes in the box.

ReviewsWrite a Review

Rated 4.7692 out of 5 stars
13 Reviews
Would recommend to a friend

13 Customer Reviews

Rated 2 out of 5 stars
By Debbie on Apr 11, 2022

Cloudy water

I would not recommend these because my water is STILL cloudy. Norm Ph nitrates etc.

Rated 5 out of 5 stars
By Juli on Jan 9, 2022

Finally Found it!!

This works great with my Aquaclear 110 filter. So Glad chewy had them!

Rated 5 out of 5 stars
By FishRFriends on Sep 17, 2021

Great medium for biological bacteria

As long as you preserve the bacteria living on this medium, you seldom have to worry about a biological crash in your tank.

Rated 5 out of 5 stars
By Smiley on Feb 19, 2021

Much cheaper here

I always check Chewy now before going to the local pet store....9 times out of 10 I will find it cheaper here. All of my fish died in the Arctic weather we had here in Texas, I tried all I could to keep them alive but was unable without any heat source. I will continue to buy here once I rebuild my tank in the future.

Rated 5 out of 5 stars
By WetDogFoodBLue on Mar 9, 2021

Fish Filter

I would purchase this product at my local aquarium store, but Chewy's prices and availability could not be compared.

Rated 5 out of 5 stars
By BobG on Jan 19, 2021

It does the job

It's a filter insert-it fits well and does the job of maintaining clear water.

Rated 5 out of 5 stars
By Moondancers on Jun 14, 2020
Top 50 Contributor

Love the Aqua Clear Biomax Filter Insert

I have used the Aqua Clear Biomax filter insert for two years and love it. I do not change monthly because I use the sponge, carbon and ammonia inserts. I only change the Biomax filter insert every 4 months. I change one filter media per month. Keeps my aquarium fresh and clear. Even after water changes and cleaning it takes about 15 min for my 20gal tank to get clear again . Love this product.

Rated 5 out of 5 stars
By Meemo on Jun 13, 2020

Can't go wrong with biomax

Perfect size I bought this to go inside the S10 filter in the first chamber. I've used these for years and they last forever. everyone should run some of these it just in case you have to set up a new aquarium than you've got biological media ready to go.

Rated 5 out of 5 stars
By RWill501 on Sep 16, 2020


The product arrived in a few days, and was just as advertised. Great service!

Rated 5 out of 5 stars
By Ashton on May 29, 2020


This is amazing! My tank was clear in a matter of hours and it's so easy to clean and change the filter! Very happy with Chewy!!!