Tetra Whisper 4i Internal Power Filter, Filtration for Aquariums Between 1 and 4 Gallons
$12.87
Price: $12.87
(as of Oct 30, 2025 05:39:12 UTC – Details)
The Tetra Whisper 1-4 Internal Filter for aquariums is a quiet, dual stage filtration system. This submersible filter mounts on the inside of the aquarium, rather than hanging from the outside, making it possible to place the tank flush against a wall and easily hide with tank decor. The water flows through Ultra-Activated carbon, absorbing odors and discoloration, as well as through the cartridge floss, trapping debris and fish waste. UNIVERSAL DESIGN: Tetra Whisper 1-4 Internal Filter is a dual stage water filter system. INTERNAL FILTER: Mounts on the inside of your aquarium. CATCHES DEBRIS: Dense mesh filters debris and fish waste. CONVENIENT DESIGN: Uses easy to change Whisper Filter Cartridges; filter mounts inside aquarium, making it possible to place tank flush against the wall. USE IN: Aquariums 1-4 gallons in size.
Product Dimensions : 3 x 3 x 7.38 inches; 9.14 ounces
Item model number : AQ-68056
Department : Unisex-Adult
Date First Available : October 12, 2018
Manufacturer : Spectrum Brands Pet LLC
ASIN : B07JC6LST2
Best Sellers Rank: #2,473 in Pet Supplies (See Top 100 in Pet Supplies) #3 in Aquarium Filters
Customer Reviews: 4.2 4.2 out of 5 stars 21,837 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
FOR 4 GALLON aquariums: This Whisper Internal Power Filter uses small filter cartridges and adjusts easily to high or low water levels.
27 GPH PUMP: The internal 27 GPH pump cycles a 4 gallon aquarium more than 6 times per hour.
TWO FILTERS IN ONE: Cartridge floss catches debris and fish waste, while Ultra-Activated carbon removes odors and discoloration.
SPACE-SAVING DESIGN: Your aquarium can be flush to the wall with the internal filter designed to clip on your tank wall and be hidden by décor.
EVERYTHING YOU NEED IS INCLUDED: This pack contains the hinged lid, tank clip, internal filter and filter cartridge.
Customers say
Customers find the aquarium filter super quiet and efficient, particularly noting its excellent performance in goldfish tanks. Moreover, the filter keeps tanks clean and offers good value for money. However, customers report mixed experiences with durability – while some say it lasts 6 months, others mention it stops working after 2 days or dies within 2 months.
10 reviews for Tetra Whisper 4i Internal Power Filter, Filtration for Aquariums Between 1 and 4 Gallons
Add a review
Related Products
$12.87
TruthTeller –
Love, Love This Filter!
Okay so… I have a 20 gallon temporarily for my 4 inch turtle. I accidentally bought the smallest of this tetra filter, so I bought the medium sized one in it’s place. I had only had the tank filled halfway anyway since my turtle was only 1.5 inches at this point. Mind you I didn’t realize how fast they grow, and had no idea that Its recommended to have a filter that can filter 2 to 3x the tank size. So I decided to keep both filters in my tank. One on each side. Even though I still don’t reach the recommended filter size, my water now almost filled to the top, stays absolutely clean. Turtles are pretty messy so I still have to do the weekly cleanings and all that extra stuff that apparently those who spend hundreds of dollars on filters still have to do as well. I don’t know if this is some kind of luck thing, I don’t know if maybe my turtle just isn’t that dirty (yea right, I see him)… but I’m actually not looking forward to switching out my filter for the ‘recommended’ filter size, as these filters work so good. I love them.They are both very quiet. Aside from the sound of the water falling back in.. I mean it sounds like a waterfall. Who doesn’t want to hear a waterfall? I love it. This can also be prevented by raising the water level or lowering the filter itself. Basically the closer it is to the water, the quieter it is.Such a simple device, yet so beautifully sufficient.The little one stopped working at one point and I thought… welp there you go! Get what you pay for. But nope! Removed the base, pulled out the magnetic spring propeller and tube, cleaned it out and like magic it started right up as soon as I plugged it back in.Love how easy it is to replace the filters. The filters themselves are great and definitely hold on to some dirtiness.One thing I’ll say is there is quite a bit of unused empty space. I now take advantage by adding some extra media, but I must say that these filters work great even without the extra.Love this filter and would recommend above any other filter.
Nicole Anderson –
Quieter than some I’ve had, seems like it could be a good one; doesn’t fit 20g aquariums with lids.
I’m giving it 5 stars even though it doesn’t fit my tank. I didn’t think to make sure it would fit with my tank lid. That’s on me. It works well and is pretty quiet, think it’s worth the near $30 it cost otherwise. Would recommend if you don’t have a lid or if you have a huge opening. If you have a regular lid that comes with your 20 gal tank, this won’t fit. I assume since I filled it with water before realizing this, that I can’t send it back. Not sure, but my current one is still working (barely), and hopefully will continue to do so until I can get a different one. (I didnt think about it and boiled the pieces to my current one in a lazy attempt at cleaning them and totally warped them and it barely went back togetherand barely pulls water through it now. I knew better and just didn’t think about it.)
Adam C Carr –
Works good
Works good. Quiet to
Eric –
A good aquarium filter
I bought this for my 1.3-gallon aquarium where my betta fish lives. So far, it has been working well. The minor issue I have is the sounds it makes when the water level goes down. It is quiet when the aquarium is full. It is slightly bulkier than the previous filter I had, which came with the aquarium. Installation was easy.
Amazon Customer –
STINKY, NOISY, and WILDLY Inconsistent
FILTER #1 – A slightly smaller version of this filter came with the 5-gal ‘Tetra Aquarium Starter Kit’ we purchased. That one reeked of burnt plastic or solvent from the moment we unpacked it. Stinky odor persisted even after staging it in a 5-gal bucket for several days before fish. As others have reported, we also found this filter can be quite the noise maker. FILTER #1 – SMELLY, NOISY JUNK.FILTER #2 – Concerned that stink and racket wouldn’t be healthy for fish or us, bought another filter, reasoning that the cost of Starter Kit PLUS a new filter would be tolerable. Ordered what we thought was the same filter (but hopefully without stink and noise). What we received is the 5-10 Gallon Whisper Internal Power Filter, which turned out to be a slightly larger version of what we started with, but which still used the same size ‘M’ bio-bag. When we staged it in the bucket we were pleasantly surprised to find it was slightly more powerful than #1. But most importantly, IT DIDN’T REEK and IT WAS ALMOST COMPLETELY SILENT. This one turned out to be a keeper and is presently in the tank with fish. FILTER #2 – EXCELLENT.FILTER #3 – Believing we had found a good filter, and wanting a spare, we ordered another 5-10 Gallon Whisper. It arrived with a hint of the same odor as #1, but we were hopeful that would ‘just go away’ after a few days of running in the bucket. But when we ran it in the bucket, we also noticed it was a bit noisier than #2. Then it quickly became a LOT noisier. But then, worst of all, we found evidence of mineral deposits from what must have been a very lengthy previous ownership (based on the LARGE amount of deposits). That’s right, this thing was USED! FILTER #3 – STINKY, NOISY, USED GARBAGEFILTER #4 – Allowing that an unscrupulous consumer might have returned a ‘used’ filter to Amazon as ‘new’, or something similar happened in the Tetra/Spectrum supply channel, we returned/exchanged for another 5-10 Gallon Whisper in hopes of receiving another unit like #2. Not a chance – #4 was as noisy as #s 1 & 3. Back to Amazon it goes. FILTER #4 – NOISY JUNKSo, we’re done with Tetra/Spectrum filters. Based on our 25% success rate, I can’t understand how these things could possibly have gotten the high ratings they have. There’s no telling what’s behind the problems we ran into, but the end result is a string of bad experiences with Tetra/Spectrum. No point in risking any more of our time or the well being of fish with this nonsense. We’ll be looking elsewhere or going the DIY route – PLENTY of ideas on the web for fabricating what appear to be excellent performing filters from inexpensive and commonly available supplies, media and pumps.
Juan Carlos –
Silencioso y mantiene la pecera limpia
Amazon Customer –
Its quiet, does the job as an equal bonus my tank is small and it oxygenates the water enough that I don’t need a pump
Dr.Zain –
ÙÙاس٠اÙÙ Ùتج 110 ÙÙÙت ÙÙاÙÙجد Ù٠اÙÙص٠تØدÙد ÙÙجÙازØÙعÙدÙا Ù٠اÙسعÙدÙØ© 220 ÙÙÙت ÙÙØ·ØباÙاضاÙØ© اÙ٠ا٠غطاء اÙÙÙتر غÙر ثابتØÙابد ٠٠ارجاع اÙÙ Ùتج
Paola R. –
Los pocos dÃas que lleva en uso a sido 100% efectivo, limpio el agua de mi pecera a pesar que ya estaba un poco sucia.Súper silencioso y de buen tamañoHasta ahora todo bien
Scott –
Plugged it in and it was dead. Waste of time and money, spend it elsewhere. Now Iâm left with extra filters that I purchased and a dead pump/filter. Not happy Jan.