Whisper^® Internal Power Filter

Product No. 25846

Whisper® Internal Power Filter is rated 2.7 out of 5 by 10.

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.

NOTE: The filter now comes with a clip to hold the filter. If suction cups are needed please contact Consumer Services at 1-800-322-1266.

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Sizes Available

This product comes in the following sizes:
Whisper 3i - 20 GPH
Whisper 10i - 80 GPH
Whisper 20i - 125 GPH
Whisper 40i - 170 GPH

Instructions

Whisper Internal Power Filter 3i

Whisper Internal Power Filter 10i 20i 40i

Product Reviews
Question & Answer

Rated 5 out of 5 by knuckle lady from Nice! Quiet, and easy to set up. Works beautifully Not sure what everyone else with bad ratings was talking about. The pump is quiet enough. Cute lit tank.

Date published: 2018-06-01

Rated 5 out of 5 by DeeRhodes from Quiet and good so far Set mine up yesterday and it is quiet and working properly, maybe it’s a new design since some people seem to hate it. I just wish with my bubbling led there was a way to turn off the led lights and leave the bubbles on.

Date published: 2018-05-25

Rated 2 out of 5 by seb932 from Nothing is coming through the hose and water foggy Ive been using this for about 3 months and its worked perfectly now it doesnt pump the water and the tank looks cloudy

Date published: 2018-04-25

Rated 1 out of 5 by Philippe from Nice filter. But so noisy for a small pump. The filter looks great and the flow is perfect for small tank. But the little pump attached to the Whisper 3i is so noisy. There's a huge vibration sound so i got to stop the pump every night before sleeping... Not if my pump is defective or its always like that :S

Date published: 2018-04-03

Rated 4 out of 5 by JON64 from Whisper 40i doing a great job Super quiet, easy to set up and its keeping my tank crystal clear. The only difficulty is I keep the water level high in the tank so the clip did not keep the filter high enough. The suction cups aren't the easiest to install (I had to use a small screwdriver to gently persuade them into the holes) but they hold on well.

Date published: 2018-03-22

Rated 1 out of 5 by Summer turtle from Quit working after a couple of hours I bought the 10i as a temp filter till i got a better one a couple of days ago and put it in today and it worked when i plug it in,when I went to check on it ,it wasn't running .Tried plugin it into different outlets still nothing.Sad thing is i can't return it after its been in my tank.Wasted 16 dollars for a filter that doesn't work.

Date published: 2018-03-17

Rated 5 out of 5 by Andreca from Good little filter I bought the 10i about two months ago. It was originally for my 10g quarantine tank, where it did its job. But now I've been using it as a secondary filter for my 20g tank because the one that came with the tank wasn't very good. It does get louder as water evaporates out of the tank, but if you keep the water topped off right up to the lip of the filter there's just a soft trickle of sound. I do wish it still came with the suction cups, but that's a minor issue and they provide an 800 number for that.

Date published: 2018-03-16

Rated 1 out of 5 by maihem from Look for something different. Came with a 10 gallon half moon kit less than two weeks ago, which has 2 small goldfish in it. I'm 46 and grew up with fresh and salt water fish. Was suspicious of the low sides and back of this filter with the water level from the start. First and last experience using an in tank filter with this poor design. Have had to change filter media 3 times, the last on Sunday...it's Wednesday and water was overflowing out of the back of the filter and behind/out of the tank. Glad that I check it daily. If you think you hear water dripping, it is.

Date published: 2018-02-22

Whisper® Internal Power Filter Reviews - page 2

What is the maximum amount of water it can take

Asked by: Oscar449

I'm not sure I understand the question. Internal filters are sized for certain tanks, so it depends on which model you have. The Whisper 20 Internal Filter, for example, is for tanks of 10-20 gallons. Water level should be to the spillway of the filter. If you have a turtle tank or something similar, the minimum amount of water required is a 4" depth. The motor or bottom half must be covered at all times. BREX

Answered by: BREX

Date published: 2018-05-30

I bought a tetra filter Whisper 5-10 does part of the power cord go into the water?

Asked by: Pam2

If it is the Whisper Internal or In-Tank filter, yes, it does. BREX

Answered by: BREX

Date published: 2018-05-01

im using the small filter in my small size tank with a few small fish. does the filter also add air? will i need a filter and an aerator?

Asked by: jarred

Yes, the filter does add air to the water. You need an air pump if you are over stocked or don't do water changes weekly. Small tanks typically should house 1-2 fish, so if you have a "few" you might be overstocked. BREX

Answered by: BREX

Date published: 2018-04-03

I just bought a Whisper power Filter 20.  The water has grown cloudy and the motor seems too loud.  There is nothing in the tank yet but pebbles and three healthy-looking plants.  What can I do about the cloudiness and the noise. Thanks

Asked by: Edburke

In regards to the cloudiness, that has occurred because you have built a little slice of Mother Nature. Since there are no fish, you are getting microscopic animals like heterotrophic bacteria or daphnia, copepods, etc. Once you add fish and cycle the tank, it will balance and eventually clear up. In regards to the noisy filter, make sure you have the intake tube seated properly and that there is no damage to the impeller. Call 1-800-526-0650 if you need more help, such as a replacement impeller. BREX

Answered by: BREX

Date published: 2018-03-13

I have the 1-3 gallon filter for a tiny tank but i still see debris floating around through the water. Filter only seems to collect debris near the pump hole but not the whole tank. Why?

Asked by: Tony11

It will collect whatever comes near the tube and goes up it. You may be seeing something like heterotrophic bacteria. Or microbubbles. BREX

Answered by: BREX

Date published: 2018-03-12

I purchased the 1.5 gallon aquarium kit in December 2017, model ACB25000. Suddenly the pump stopped working. It doesn't make noise, it doesn't pump. 

Asked by: patrick1

If you are not using a check valve, open the pump to see if it has water damage. If so, it needs replacing. If not, then please call 1-800-526-0650 and we will replace it under warranty. BREX

Answered by: BREX

Date published: 2018-02-23

I have the Whisper 40i for my turtles and I was wondering if I need to keep it running constantly or if I can/should turn it off at night 

Asked by: paigeehack

It should operate 24/7 to properly keep the tank balanced and clean. BREX

Answered by: BREX

Date published: 2018-02-23

Why is my water cloudy.

Asked by: Robert9

Well, that's the million dollar question! There are lots of reasons for cloudy water: -over stocked with fish - over feeding - lack of gravel vacuuming - lack of partial water changes - heterotrophic bacteria and other microscopic animals - new tank syndrome It is always best to start by testing the water for ammonia, nitrite, and nitrates, and do a 30% water change with a good gravel vacuuming if you haven't done one. BREX

Answered by: BREX

Date published: 2018-04-12

Whisper® Internal Power Filter Questions - page 2

Sizes Available

Instructions

What is the maximum amount of water it can take

I bought a tetra filter Whisper 5-10 does part of the power cord go into the water?

im using the small filter in my small size tank with a few small fish. does the filter also add air? will i need a filter and an aerator?

I just bought a Whisper power Filter 20. &nbsp;The water has grown cloudy and the motor seems too loud. &nbsp;There is nothing in the tank yet but pebbles and three healthy-looking plants. &nbsp;What can I do about the cloudiness and the noise. Thanks

I have the 1-3 gallon filter for a tiny tank but i still see debris floating around through the water. Filter only seems to collect debris near the pump hole but not the whole tank. Why?

I purchased the 1.5 gallon aquarium kit in December 2017, model ACB25000. Suddenly the pump stopped working. It doesn't make noise, it doesn't pump.&nbsp;

I have the Whisper 40i for my turtles and I was wondering if I need to keep it running constantly or if I can/should turn it off at night&nbsp;

Why is my water cloudy.

I just bought a Whisper power Filter 20. The water has grown cloudy and the motor seems too loud. There is nothing in the tank yet but pebbles and three healthy-looking plants. What can I do about the cloudiness and the noise. Thanks

I purchased the 1.5 gallon aquarium kit in December 2017, model ACB25000. Suddenly the pump stopped working. It doesn't make noise, it doesn't pump.

I have the Whisper 40i for my turtles and I was wondering if I need to keep it running constantly or if I can/should turn it off at night