Help keep your aquarium in tip-top condition with Tetra’s Whisper Internal Power Filter. This filter is specifically designed for 4-gallon aquariums and fits small cartridges, offering both mechanical and chemical filters! The activated carbon helps eliminate odors and discoloration, while the cartridge floss is designed to help catch fish waste and debris. This filter also has a 27 GPH pump that cycles over six times per hour. The hinged lid makes changing cartridges a cinch and the compact design is easy to disguise with decor. Plus, it easily adjusts to different water levels all thanks to the adjustable clip!
Specially designed for 4-gallon aquariums and uses small filter cartridges.
The internal 27 GPH pump cycles through the aquarium over 6 times in one hour.
Ultra-activated carbon helps control odors and discoloration and cartridge floss helps trap fish waste and debris.
The internal filter has a clip that attaches to your tank, so you can easily hide it with décor and place your aquarium flush to the wall.
Comes with a hinged lid, internal filter and filter cartridge and a tank clip, so you'll have everything you need!
The filter cartridge should be replaced every two weeks (or as needed). To change cartridge, unplug the Air Pump to stop the water flow, remove and replace the cartridge, then re-plug the Air Pump.
Remove the filter cartridge when medicating fish, as it absorbs most medications.
Clean the outside of the Air Pump with a damp cloth. When cleaning the filter and Air Pump, unplug the Air Pump. Do not use detergents or soap, as residue may be harmful to fish.
Lift the filter cover. Rinse with tap water and insert the filter cartridge.
Connect the airline tubing to the filters diffuser and Air Pump.
Install the filter inside the. back wall of your tank.(Note: the spillway of the filter should be approximately one-half inch above the water level in the aquarium, and the diffuser should be approximately one-half inch above the aquarium gravel.)
To place the pump on a surface lower than the water level of the aquarium, install the check-valve (included) on the tube between the aquarium and the Air Pump. (Note: The check-valve should be attached close to the air pump nozzle. The check valve prevents water from siphoning into your Air Pump in case of an electrical power failure. It is not necessary to use the check valve if the Air Pump is positioned higher than the water level.)
Plug in the Air Pump creating a drip loop in the power cord and airline tubing.
Have a small Triop tank... they are filthy little buggers. Have this for use when they are larger, just an airstone running when babies. Have to cut up a fish net and wrap around intake, but it gets the job done. Because Troops are dirty, filter must be changed at least weekly. But they're so cute, it's worth it.
Doesn't filter, stops working after a month (x2)
on Oct 23, 2019
Got this to purely keep the water flowing a little in my cherry shrimp tank. They're bottom feeders, so it doesnt have much left to filter. I also have a small pleco and some snails. They do most of the natural filtering. I got one, it stopped working within a week. I contacted Chewy, they sent me a new one for free. This second one has now essentially stopped after a month, with only a tiny trickle of water coming out. If you have a betta, you might have better luck, but I'd advise buying something different... I'm about to.
Good in a pinch
on Nov 14, 2019
I've kept one of these as a backup, since my tanks are 3.5 to 5.5 with one exception, and it's good for when you don't have another filter to put in. However, the clip is too small and very cheap. If you adjust it too many times, it'll break off the mounting peg inside of it. The filter will not fit on an aquarium with a finished edge - you'll have to freeball it without the clip.
Whisper by Tetras
on Dec 17, 2019
The Whisper pump is small, but need to have a bar over the water flow and not a hole . The fish get stuck in it.
Broke in two days
on Nov 6, 2019
Very poorly made. I do not like tetra products at all but was in desperate need of a small filter. Never again. Aqueon only lol
on Jun 21, 2019top50Contributor
This filter is pretty good! I use it in a 5.5 gallon paludarium with a male Northern Cricket Frog. Since this type of frog is technically a tree frog, he doesn't seem to use the water part much. However, every once in awhile, he'll decide to soak for a few hours, and that's exactly why I use this filter! It works in about 2.5" of water and is extraordinarily quiet! The flow is soft and it's kept the water clean and clear! I seed the filter with already cycled media from some of my aquariums, and ever since then, the water has been crystal clear!! I highly recommend this filter. I have 3 of these filters; 1 in the frog tank and 2 in the Hermit Crab tank. Hermit Crabs really do require deep waterThis filter is pretty good! I use it in a 5.5 gallon paludarium with a male Northern Cricket Frog. Since this type of frog is technically a tree frog, he doesn't seem to use the water part much. However, every once in awhile, he'll decide to soak for a few hours, and that's exactly why I use this filter! It works in about 2.5" of water and is extraordinarily quiet! The flow is soft and it's kept the water clean and clear! I seed the filter with already cycled media from some of my aquariums, and ever since then, the water has been crystal clear!! I highly recommend this filter. I have 3 of these filters; 1 in the frog tank and 2 in the Hermit Crab tank. Hermit Crabs really do require deep water dishes that are filtered, and that's exactly what I do. 1 is in the freshwater section, and 1 is in the saltwater section. Overall, I highly recommend these little filters! They're small, quiet, they keep the water clean, and they last!! 5 stars for me :)… more
on May 10, 2019
Had 2 pumps go out in 2.5 gal so tried a bigger pump this one a gift from my daughter in law after several fish losses and tears by my youngest 10 yo son.. no more tears this pump performance is great we’ve gotten good weekly water checks and it helps his tank look great. We’ve had it in two weeks and hopefully it’ll keep doing a great job. We ordered the filter to replace from chewy but haven’t needed yet and it hadn’t been a month yet as recommended to change or sooner if needed.
step up filter
on Mar 16, 2019
I have a small 3 gal aquarium on the bar and felt I needed a bit more filter. Got in touch with Chewy.com and moved up to a filter for a 5 gal tank. They had all the information I needed for what would fit and filter to use. Our aquarium is perfectly clear, fish are happy and so am I. Living in Wyoming we have a number of pets of all sizes and Chewy are our go to folks.
Fish tank flitter
on Mar 28, 2019
I really love my fish tank flitter. Really good quality and keep the tank really clean. I love how fast the shipping was too! My Betta fish (Opal) and I want to say thank you Chewy!
No Good picture on box is impressive
on May 21, 2019
Clip is not user friendly, does not stay in place, then will leak. Better off getting a real filter