Tetra Whisper Internal Aquarium Power Filter with BioScrubber

By Tetra
Rated 3.8267 out of 5 stars


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$27.79Chewy Price
$29.39Chewy Price
In Stock
FREE 1-3 day delivery on first-time orders over $35

About This Item


  • Features a submersible filter with a quiet, convenient, 3-stage filtration system—chemical, biological and mechanical.
  • Dual-sided Bio-Bag mesh that catches debris and fish waste with an activated carbon that absorbs odors and discoloration.
  • The bio-scrubber’s solid back allows the water to flow evenly over the bacteria-rich bristles for best performance.
  • Anti-clog design for convenient and easy maintenance also provided by the bio-scrubber.
  • 5-10 gallon uses medium Whisper Bio-Bag Cartridges; 10-30 and 20-40 gallon uses large Whisper Bio-Bag Cartridges.

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Play Video: Learn More About Tetra From Our Team of Experts
Learn More About Tetra From Our Team of Experts

Keep your filter extra clean with the compatible cartridges.

Frequently Bought Together

Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Rated 4.634 out of 5 stars
$11.49Chewy Price

Buy 2, Get 3rd Free- Mix & Match

Tetra Whisper Bio-Bags Large Filter Cartridge, 1 count
Rated 4.625 out of 5 stars
$2.82Chewy Price

Buy 2, Get 3rd Free- Mix & Match

Total Price: $42.10

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Fish TypeMarine Fish, Tropical FreshwaterBetta, Cichlid, Goldfish, Tropical FreshwaterMarine Fish, Tropical FreshwaterBetta, Bottom Feeder, Cichlid...Marine Fish, Tropical Freshwater
Aquarium TypeSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, Freshwater
MaterialSynthetic Fabric, MeshPlasticPlasticPlasticPlastic
Capacity (Max)20 gallon/130 GPH

Questions & Answers

62 Customer Questions

What is the minimum amount of water (20 Gallon long tank) in inches needed for this filter to work properly? it is for a turtle
Answer by ChewyJan 12, 2018
To use this product you will need approximately 6-7 inches of water.

Would you recommend a small 5-10 or a 10-20 for a 10 gallon tank?
Answer by ChewyAug 07, 2019
To determine which filter is best for a 10 gallon tank, it's best to consider what type of fish is in the aquarium. For example, if you may have a betta fish then the smaller filter may be more appropriate however, if you may have other species or multiple fish in the tank, then the larger 10-20 may be better.

Can i use 2 filters for a 55 gal tank?
Answer by ChewyJan 23, 2018
You can certainly use 2 filters. Just ensure it's paired close enough to 55 gallons.

stupid question. does it also put some oxygen in the water.
Answer by ChewyJul 21, 2019
Filters move water from the top to the bottom of the tank, thus distributing oxygen throughout the aquarium.

ReviewsWrite a Review

Rated 3.8267 out of 5 stars
277 Ratings
Would recommend to a friend

277 Customer Reviews

Rated 5 out of 5 stars
By Karen on Oct 9, 2023

I'm impressed by Chewy!!

My whisperer quit working and I sent Chewy a message and within minutes they responded and setup my new one to be shipped to me ASAP!! Things happen, sometimes things quit working, but they were on it!! I will definitely be shopping with them more often their customer satisfaction is a priority!! Let's face it that's not a thing these days!! It's been about a month and it's still working and keeping my tank nice and clean!! Thank you Chewy I'm definitely a happy customer!!

Rated 5 out of 5 stars
By diane on Nov 28, 2023

Love these!!

I have 3 75 gallon tanks and use 3 in each one, keeps my turtle tanks super clean and water clear.. Been using these for years and I love them, never had any issues.

Rated 2 out of 5 stars
By Kismet on Oct 24, 2023


1st it was packed with a 30 pound bag of food. Needless to say it was all over inside the chewy box. Pieces missing. It does not want to hang on the tank. HATE IT, don't recommend

Rated 5 out of 5 stars
By Julie on Sep 24, 2023

Nice filter

My daughter has had several different filters. They didn't last. These filters are great. Bought one for back up in case this one dies.

Rated 3 out of 5 stars
By rylee on Sep 10, 2023

does what it needs to do

not necessarily meant for the water capacity of a 40 gallon tank in my opinion, but it does it's job so i can't complain too much as it's only a temp filter.

Rated 2 out of 5 stars
By axie on May 17, 2023

Would not recommend, product misleading

I got this filter for a 20 gallon long tank and would not recommend it to anyone. The filter itself is massive, almost reaching the bottom even tho its the reccomended size. The filter is loud and the stream is not gentle whatsoever. I had it running for about an hour and it left a massive pit in the sand. The filter also left bits of who knows what floating around the tank (i washed it prior to using and there where still things coming off of it). I got this for my axolotl and it just isnt a good fit in every way. I took it out prior to putting my animal back in the tank to avoid it becoming stressed and even before that i was scooping out bits of black particles that came from the filter

Rated 5 out of 5 stars
By Leann on Nov 11, 2023

Delivered so fast

This is a nice quiet filter. And my delivery got here so quick..thanks chewy

Rated 5 out of 5 stars
By Mo on Jun 6, 2023

Works great

The product was larger than expected, but that's my fault bc I accidentally ordered a size up. Mine did not come with suction cups not sure if that is an extra purchase. Does not sit against the side, sort of floats up so just propped a rock beside it and had no issues. INCREDIBLY QUIET!!

Rated 5 out of 5 stars
By CMK on Sep 3, 2023

Great Pump

Bought pump to replace one in 10 gallon aquarium. Cleared water within a day. Like it very much.

Rated 5 out of 5 stars
By love on Jun 6, 2023

Works so well!

This is the first filter i've bought that has lasted more than a few months. I've had this filter for about a year now and it still works like a charm!