Tetra Country Select Button

Whisper® Internal Power Filter

Product No. 25846

Whisper® Internal Power Filter is rated 2.5 out of 5 by 20.
  • y_2019, m_2, d_18, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.11
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_20
  • loc_en_US, sid_25846, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_tetrafish
  • bvseo_sdk, net_sdk, 3.2.0.0
  • CLOUD, getAggregateRating, 10ms
  • REVIEWS, PRODUCT
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.


This product comes in the following sizes:
Whisper 3i - 20 GPH
Whisper 10i - 80 GPH
Whisper 20i - 125 GPH
Whisper 40i - 170 GPH
Rated 1 out of 5 by from Not happy Spent over $20 on this filter for my 20 gallon long tank it makes a loud vibrating noise and gurgles water in the back part! It’s so loud I can hear it loudly across my room I can only imagine how annoyed my poor fish must be.
Date published: 2019-01-20
Rated 5 out of 5 by from Works Great Lots of negative reviews here, so I thought I’d chime in. This filter works great for my standard 10 gallon aquarium set-up. My last off-brand filter stopped working after 2 weeks and my aquarium started getting cloudy. I popped this filter in and the water was clear again within the hour. Time will tell, but for the purpose, this filter works fine. Can’t beat the price. It’s a little bigger than I’d like aesthetically, but if it works and my fish stay healthy, I can’t complain!
Date published: 2019-01-11
Rated 1 out of 5 by from 3i not flowing water in less than a month Bought a glo-fish cube aquarium from Tetra and it came with the 3i bubler filter. It worked fine for 29 days and quit flowing water. Replaced the filter and still no flow through the filter. Bubling is functioning just fine but now without filtration, the water is beginning to become cloudy.
Date published: 2018-10-22
Rated 5 out of 5 by from So far the Whisper 40i has been perfect I bought several of these for my smaller turtle tanks. Wrapping the bottom with polyester media prolongs need to clean filter and protects the impeller from clogging. I recommend this particularly for Turtle tanks 20 gallon or less.
Date published: 2018-10-17
Rated 2 out of 5 by from WHISPER FILTER Just installed the whisper 3 and not impressed. It doesn't fit right in my tank I can not put the lid on, the motor has to be higher than the water level and the plug in has to hang ???. It just spits out water from the spout but the clear bubble part is going strong. Its not designed for my tank and I will find a more suitable one then return this one.
Date published: 2018-10-06
Rated 1 out of 5 by from Why does it have holes and no suction cups? Filter is quiet and would work great, but it comes with no sucktion cups and has holes in the back!? The water leaks out the back and this doesn't work with my tank setup (clip doesn't fit on my tank style).
Date published: 2018-09-26
Rated 1 out of 5 by from Extremely Annoyed I recently purchased this filter. The box said it came with suction cups as well as the clip. Upon opening the box I realized only the clip came with the filter. I am unable to use the clip since my aquarium has a lip on the top. I contacted customer service and they basically said “too bad” buy suction cups from our website. There is no way I am paying 4.20$ for suction cups and 13$ in shipping.
Date published: 2018-09-26
Rated 5 out of 5 by from Great until it's not Purchased two filters for my tanks. The large filter is going strong, but the smaller one just pooped out this week. It was running great, quietly, and reliably for less than a month before it simply stopped. I am super bummed about it, because I quite like the filter for its aesthetics and functionality! Had it not quit, then it would get a solid FINE STARS without hesitation. I suppose this is simply a "buyer beware" tale. They are wonderful while operational, but that period of time might be limited. [saddest face]
Date published: 2018-08-14
  • y_2019, m_2, d_18, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.11
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_20
  • loc_en_US, sid_25846, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_tetrafish
  • bvseo_sdk, net_sdk, 3.2.0.0
  • CLOUD, getReviews, 25ms
  • REVIEWS, PRODUCT