Whisper® Internal Aquarium Power Filters

The Tetra Whisper internal aquarium filter is the ultimate in quiet, convenient 3-stage filtration. The dual-sided mesh of the Bio-Bag® catches debris and fish waste while the activated carbon absorbs odors and discoloration. Biological filtration is provided by the Bio-Scrubber. Bio-Scrubber's anti-clog design provides complete biological filtration with the convenience of less maintenance. Because the Bio-Scrubber has a solid back, water is forced to flow evenly over the bacteria-rich bristles. The filter is submersible.
Whisper® Internal Aquarium Power Filters is rated 3.119047619047619 out of 5 by 42.
Rated 1 out of 5 by from Terrible, not what I expected My boyfriend and I invested in this product a few months ago but boy was it a mistake. It was good at first, like the first 2 weeks and after that, a mess. It has to be cleaned so much because it just gets so dirty. It says to replace the filter with the bracket inside every month but it happens more often than that. Another thing is that it's not even silent!! Why is it called Whisper and said to be quiet when it's the loudest thing ever. The filter we had before this one was quieter and we barely liked that one.
Date published: 2016-07-20
Rated 5 out of 5 by from awsome I bought this with my first aquarium and it was awesome and it was quite and when it first starts to turn on it will make some sounds but after it is done starting it is quite and it does a great job keeping my tank clean
Date published: 2016-07-19
Rated 5 out of 5 by from Works Awesome! I'm not sure why people are having so many problems. I followed the set up instructions to the t. I have had zero problems! It is completely silent, like I hear nothing! Works great my water is crystal clear and my fish are happy! Perhaps people are buying this product from bad vendors? Either that or the lip of the filter is under or touching the water.
Date published: 2016-07-16
Rated 1 out of 5 by from AVOID There is no suction cups. The product was NOT as advertised. It was loud, buzzy, and could not be used. Awful.
Date published: 2016-07-05
Rated 2 out of 5 by from Only works half the time. After two months of use, both of my whisper filters don't work like they should. I clean them regularly and change out the filter as directed but there is little to no water flow out of them right after I clean them or after about a week.
Date published: 2016-06-12
Rated 1 out of 5 by from I cannot attach whisper 3i to my tank..... I think that Tetra Whisper filters are amazing products… However the new innovative clip attachment method falls short of the functionality of the simple suction cups. Because of this, The filter I bought is completely and utterly useless, because I cannot attach it to my tank properly. Instead of flowing properly and filtering in my tank it sits there and bubbles because of the angle at which it sits. Thanks Tetra...
Date published: 2016-05-08
Rated 1 out of 5 by from Really loud and bad Bought a whisper 60 gal filter really loud and it's only been 2 weeks and it's faulty really bad I'm disappointed would like for them to resolve this
Date published: 2016-05-05
Rated 5 out of 5 by from Great filter for the money This filter performs just as well as its more expensive counterparts. It is quiet and provides biological filtration. The filters are easy to change and can be found in most places that sell aquarium supplies.
Date published: 2016-04-06
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I have a 3 gallon round tank that I use the small Whisper Filter. I was going to buy a new unit, but notice it no longer use suction cups but a hook over. This won't work on my tank. What do I do when mine goes out?

Asked by: TikiBetta
Just give us a call for suction cups, 1-800-526-0650. We still have them and will be adding them to the kit, going forward, along with the clip.BREX
Answered by: BREX
Date published: 2016-07-19

Hi I am wondering what is the energy comsumption for Whisper® Internal Aquarium Power Filters 10i? I don't seem to find answer anywhere.

Asked by: Josh Ding
4 wattsBREX
Answered by: BREX
Date published: 2016-07-18

How often do you need to replace the filter cartridge in my 10i filter?

Asked by: iluvdupey
Depending on your fish load, once every 3-4 weeks.BREX
Answered by: BREX
Date published: 2016-07-18

Does the power cord go inside the yank with water

Asked by: Jessthenater
Good morning,Thank you for your inquiry. Yes, the power cord where it connects to the base of the motor unit will be submerged in the water in your tank.MINI
Answered by: Mini
Date published: 2016-07-13

Where does the plug go?

Asked by: 15014
Good morning,Thank you for your inquiry. The plug that has the metal prongs will connect into your outlet that is in the wall of your home. The other end that is plugged into the bottom of the filter housing, will indeed be inside of the water in the tank, submerged. This is perfectly safe.MINI
Answered by: Mini
Date published: 2016-07-12

My filter is on but no water is coming out does that mean my filter is broke it's only a week old

Asked by: laura13312
Good morning,We would be more than happy to help you with this. We will be emailing you with instructions on how to clean and reseat the impeller to make sure that the unit is not clogged wtih debris.MINI
Answered by: Mini
Date published: 2016-07-12

can this be used for salt water aquariums?

Asked by: OtisFA18
Yes, it will work in a marine aquarium.BREX
Answered by: BREX
Date published: 2016-07-06

Which way should the slide on the back of my filter be facing? My fish keep dying EVERYTIME I clean the tank I find them next day belly up under the filer and Iv been very careful with making sure the water temp is the same and taking extra precautions.

Asked by: mthomas21
When cleaning the tank, do not change all of the water, only change about 25% of it, and use Aquasafe Plus to de-chlorinate it. Use a gravel vacuum instead of removing the fish, and you will cause less stress to the fish.I assume you are referring to the hanger that connects the filter to the tank, it can only fit one way though, so I am not sure that I understand the first question.BREX
Answered by: BREX
Date published: 2016-06-30
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Whisper Internal Filter Instruction Sheet


Aquarium Size

Cartridge Size


up to 10 gallons



up to 20 gallons



up to 40 gallons