Tetra Whisper Aquarium Power Filter

By Tetra
Rated 3.5814 out of 5 stars
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Tetra Whisper Aquarium Power Filter, 20-40 gal slide 1 of 8
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Tetra Whisper Aquarium Power Filter, 20-40 gal slide 1 of 8

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$31.67Chewy Price
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This Item - Tetra Whisper Aquarium Power Filter, 20-40 gal
Rated 3.5814 out of 5 stars
$31.67Chewy Price

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Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Rated 4.6269 out of 5 stars
$8.57Chewy Price
Tetra Whisper Bio-Bags Large Filter Cartridge, 1 count
Rated 4.5873 out of 5 stars
$2.62Chewy Price
Total Price: $0.00

About This Item

  • For a crystal clear aquarium, this filter completely eliminates toxic ammonia and nitrites.
  • Economical and easy to use, even for beginning aquarists.
  • Provides efficient three-stage filtration—mechanical, chemical and biological.
  • The scientifically engineered water flow provides a continuous flushing action to prevent debris buildup.
  • Optimum outflow maximizes water agitation and oxygenation.
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Learn More About Tetra From Our Team of Experts

Keep your system running smoothly Tetra filter.

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Fish TypeTropical Freshwater, Betta, Cichlid, Goldfish, Marine FishTropical Freshwater, Marine FishTropical Freshwater, Marine FishTropical FreshwaterTropical Freshwater, Marine Fish
Aquarium TypeFreshwater, SaltwaterFreshwater, SaltwaterFreshwater, SaltwaterFreshwaterFreshwater, Saltwater
MaterialPlasticPlasticPlasticPlasticMesh, Synthetic Fabric
Capacity (Max)Up to 40g

Questions & Answers

10 Customer Questions

Is this a double filter system or a single filter system, I do not see where it states it contains two filters which is the one I currently have and it is broken.
Answer by ChewyJul 22, 2017
This easy-to-use system provides efficient three-stage filtration (mechanical, chemical and biological) in one single filter.

How many gallons an hour does the 60 pump
Answer by ChewyApr 29, 2020
The size 10-20 pumps 105 gallons per hour, the size 10-30 pumps 145 gallons per hour, the size 20-40 pumps 210 gallons per hour and the size 30-60 pumps 330 gallons per hour.

Does this item have the option to adjust the flow? I know betta fish don't like a strong current in their aquarium and I'm looking for a good one for my new 10 gallon aquarium.
Answer by ChewyMay 18, 2021
The Whisper 20, 30, 40 and 60 all have a flow control on the intake tube. Turn the knob backwards so the point faces the wall. You can also place plants in front of the intake tube to help the fish deal with the current.

what size replacement filters does it use?
Answer by ChewyJun 22, 2022
The "Tetra Whisper Bio-Bags Small Filter Cartridge" are compatible with this filter.

ReviewsWrite a Review

Rated 3.5814 out of 5 stars
86 Reviews
Would recommend to a friend

86 Customer Reviews

Rated 2 out of 5 stars
By Fishtank on Jun 28, 2022

Think twice before buying

I bought this to replace an Aqueon that stopped working after about a year. This was easy to set up, and does a great job filtering the water. The major problem is the noise. I never thought such a small filter could make so much noise. I can hear it over the window a/c. Very disappointed.

Rated 1 out of 5 stars
By Rick on Aug 27, 2022

Power Filter a piece of trash

dose not work at all like it should. my tank been cloudy ever since a bought the new filter piece of trash.

Rated 5 out of 5 stars
By Brich on May 9, 2022

Great filter

Got this for my 40 gallon I've had fish tanks and filters before but none like this one having more then one bio sponge and filter cartridge is fantastic it has cleaned my tank and the water is staying clear and clean also love that you can control the flow of it it is kinda loud but most machines make noise of some kind very pleased with the purchase.

Rated 3 out of 5 stars
By Carol on Jun 21, 2022

Works well, but not quiet.

A great working filter, and filters are very reasonable. However, if you need a super quiet filter, go for another one. With tank in a bedroom, would be annoying.

Rated 5 out of 5 stars
By Good on Feb 16, 2022
Top 1000 Contibutor

Good filter

I’ve owned aquariums for the past 20 years, and I’ve always used Whisper filter systems, they last years, work great, and keep the water crystal clear. My fish: Marigold, Marble, Paprika, Sage, Lemonade, Coco, Creamsicle, Maple & Tiramisu are healthy and happy. I downgraded my tank from a 55 gal. To a 30 but I still use the dual filter system because I like to change the cartridge one at a time to keep the good bacteria going at all times. The water is always crystal clear!

Rated 4 out of 5 stars
By WhisperFilter on Mar 29, 2022

Good but.....

Replaced a previous Whisper filter that was probably 20+ years old. This new one works great but it is considerably noisier than the old one. That said, the filter works great, is easy to maintain and would recommend it over the Aqueon which is VERY noisy.

Rated 2 out of 5 stars
By Kalieka on Feb 17, 2022

No thank you.

"Whisper" is just a name. This filter makes a grinding sound louder than any other filter I have ever bought, and we have 7 tanks both saltwater and fresh. We know filters. We can hear it all the way down a long hallway from the living room. Followed all instructions. Would not buy again, and do not recommend it. We unplugged it after a day and will only use it again if we are in a pinch. I understand why is it cheaper than others.

Rated 1 out of 5 stars
By Grinder on Feb 2, 2022

Whisper... hahaha not! More like Grinder

So these filters are so NOT what they used to be. I replaced my old filter unit knowing that Whispers were stellar products in the past but they are far from whispering these days it's more like grinding. I can hear it 2 rooms away from the tank and I have bad hearing as well... not good. Disappointed customer here...I am requesting a refund and I'll keep my old one since the whisper is not even doing half the job my Penguin was doing. SMH

Rated 1 out of 5 stars
By Morgan on Feb 12, 2022

Do not buy

I purchased this filter and it was in use for not even a month and then stopped working, since I was still in my 30 days I called to get a replacement. The same thing happened with the replacement.

Rated 4 out of 5 stars
By GroguTheTurtle on Apr 3, 2022

Pretty good

This is alittle louder than the aqueon but it does seem to circulate water and filter well.