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Availability:
In Stock.
Arrives
Wednesday, Sep 16
Size: up to 10-gallons
Features
- Powerful: Our Whisper Air Pump provides dependable airflow to your aquarium.
- Quiet: Patented dome shape, suspended motor and sound-dampening chambers for quiet operation.
- Provides oxygen and water movement: Keeps underwater pets happy.
- Available sizes: Select the proper size for your tank - 10, 20 and 40-gallon pumps have single air outlets, 60 and 100-gallon pumps feature dual outlets.
- Non-UL listed: Reliable performance at an economical cost.
Description
Tetra Whisper Air Pumps for aquariums provide powerful, dependable airflow. Efficient and easy-to-use, Whisper Air Pumps are available in a range of sizes to handle the aeration needs of aquariums from 10 to 100 gallons. Tetra Whisper 10 Air Pump (non-UL) can be used in tanks up to 10 gallons.The Tetra Whisper Air Pump’s patented dome shape and sound-dampening chambers minimize turbulence and produce a smooth, quiet stream of air. Its wide footprint, rubber feet and suspended pump motor eliminate sound-producing vibrations. Thick walls insulate motor noise, and powerful diaphragms provide ample airflow for deep water applications. Uses standard-size aquarium tubing. Select the proper size air pump for your tank.Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor.
Color: Blue
Brand: Tetra
Material: Plastic
Item Weight: 12 ounces
Product Dimensions: 3.9"L x 2.8"W x 5.5"H
Product Dimensions : 3.88 x 2.75 x 5.5 inches; 12 ounces
Manufacturer recommended age : 1 month and up
Item model number : 77851
Department : mens
Date First Available : October 19, 2006
Manufacturer : Tetra
Best Sellers Rank: #6,308 in Pet Supplies (See Top 100 in Pet Supplies) #12 in Aquarium Air Pumps
#12 in Aquarium Air Pumps:
Customer Reviews: 4.5 4.5 out of 5 stars (44,991)
Power Source: Corded Electric
Air Flow Capacity: 40 liters per hour
Operation Mode: Automatic
Item Weight: 12 ounces
Item Dimensions L x W x H: 3.9"L x 2.8"W x 5.5"H
Color: Blue
Material Type: Plastic
Item Highlight: Suspended Motor For Quiet Operation, Provides Oxygen & Water Movement In Fish Tank, For Freshwater Or Marine Fish
Brand Name: Tetra
Global Trade Identification Number: 16
Manufacturer: Tetra
Unit Count: 1 Count
UPC: 046798778516
Number of Items: 1
Included Components: Tetra Whisper Easy to Use Air Pump for Aquariums (Non-UL)
Item Type Name: Tetra Whisper Easy to Use Air Pump for Aquariums (Non-UL)
Model Number: 77851
Manufacturer Part Number: 75077851
Warranty Description: As Labeled
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Sep 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 60-100-gallon
Rating: 4.5 stars Would I recommend? Yes! My current tank setup is a 40-gallon breeder with one axolotl. We had still been using a cheap, unbranded air pump designed for our old 10-gallon starter tank for the past year and a half or so; it still worked and produced sufficient air to power two bubble accessories, but was loud as sin. Especially when the tank chiller was going at the same time, the noise level was really annoying. Since we're home all the time now during quarantine, it got really irritating listening to that air pump, so I did a lot of research that led me to the Eheim brand of pumps. They supposedly had the best power and noise level. I ordered the Eheim 200 (which is supposedly overpowered for my 40-gallon tank, as it's rated for 60 gallons) and returned it the same day I received it. Even with BOTH of its outputs combined with a T-connector and cranked up to maximum output, it was not strong enough to produce ANY visible bubbles, even when connected to only one bubble accessory. It was pathetic: yes it's quiet, but that's because it doesn't do anything! I don't think we just got a dud, either, as we could feel the air output on our hands, it was just very weak. We were very disappointed. It was not at ALL worth the price, and functioned worse than our cheapo beginner air pump. Next up, I finally decided to try the Tetra whisper. We read from a reviewer who tested the output and dB of many pumps that this one was NOT the quietest, but was efficient, inexpensive, and quiet enough for the price. I was also still wary of many negative reviews. After my previous disappointment, I really considered getting a Tetra pump intended for deep water application (overkill, but we wanted to make sure this one actually worked!) but finally decided to compromise on a Tetra Whisper 100-gallon pump. Unlike the Eheim, it doesn't offer built-in output controls, but it does have 2 outputs. I really only need one output, and the power is still overkill, but thankfully... this one WORKS! The device is easy to set up, and functions well even when both outputs are connected via a T-connector (I also use a one-way valve at that point just to prevent backflow). We have the pump itself plugged in inside a cabinet under the tank, and we run a line up into the aquarium via a hole in the lid. I then split off the line with an air manifold inside the tank itself and have it hooked up to two bubble toy accessories. I am delighted to report this is capable of powering both, without producing an excess air volume. Our axie likes to hang out near the bubblers. Best of all, this pump really is quiet. It does produce an audible low hum when you're nearby, but does not rattle and cause other things in our cabinet to vibrate loudly like our old pump did. The volume is negligible when not standing next to the cabinet with the doors open. It is actually a huge relief. I would recommend this product over the Eheim pumps especially, and would advise others to go for a significantly higher volume rating than their tank volume if they intend to power anything more than a bubble wand. I also recommend purchasing a T-connector with one-way valve if you need to power a single accessory that needs more air power, such as a filter.
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Reviewed in the United States on May 15, 2020 by Amazon Customer
Size: 20-40-gallon
These are the best ones I’ve used over the years. They are very quiet. Gives the best airflow for the tank. I have always over sized my air pump. Highly recommend.
Reviewed in the United States on August 5, 2026 by Jennifer L.
Size: 20-40-gallon
Tetra Whisper Easy to Use Air Pump for Aquariums (Non-UL) ~ 20 - 40 gallon ~ AKA Whisper 40 Upgrading from my long running Whisper 10 to a 40 as I'm adding a sponge filter to the mix. And my 10 which is still going strong will be kicked down to a 5.5 gallon tank for quarantine or fry. New one seems just like the old one just a little more powerful which is exactly what I hoped. I find these style Tetra pumps to be kind of a gold standard because in my experience they're quite reliable and long lasting, maybe not the quietest on the planet but not loud at all, and very well powered for the price, which is very reasonable. And they've been around for quite a while and sold in a lot of places so they've got consistency down. You can get a quieter pump but will pay a whole lot more for an actually long lasting one with the same power, and I find these Tetras to be reasonably quiet. Unless you're really critical or sensitive to a low hum I don't even notice from across the room. And you can find cheaper pumps, or ones in the same price range with a 2nd output or adjustable flow, but they are usually under-powered or disposable junk. These Tetras are just all around good solid basic air pumps. And I can just split or regulate my lines. I do wish they would stick to listing these as "Whisper 40" or whatever like it says on the pumps or a standard model number like "AP-40" instead of this gallon range nonsense. The original numbers were always implied gallon ratings anyway but this range thing being the main naming distinction just muddies the waters of what we're all used to. I'd say 20 - 40 gallon is a fair ballpark range for a Whisper 40 but there's enough variables that could easily throw that off that it doesn't make sense for the main naming distinction. If all you want is a single little air stone a Whisper 10 would likely be all you need up to 30 or possibly more gallons. Definitely for a 20 long which isn't that deep. And if you had a 10 gallon tank with a sponge filter or bubble wall plus some other bubble feature you would definitely benefit from going up to a Whisper 40. Implying gallons it in the model number is fine, at least we know the models, getting rid of model numbers so the pump doesn't even have a name any more, just a range of questionable accuracy is stupid in my opinion. Plus it's just a nuisance taking something that's been around long enough that tons of people know the standard numbers, not to mention it's mentioned that way all over the internet anyone new to the hobby will find, and now have to decipher what this range nonsense is. I come knowing I wanted a 40 and see 20-40, 40-60, etc, and I'm like what? I know now the max number is the one that corresponds to the old standard number but it's just stupid. The one I got says Whisper 40 on the bottom of the pump as I would expect but that's not in this listing anywhere. Why? And you could still list the suggested gallon range in the description or on the box somewhere, just put a standard non-changing number on the box and anywhere there's product selection online so we can know the model without playing games.
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Reviewed in the United States on September 28, 2022 by Bob Dawson
Size: up to 10-gallons
I got all 3 sizes of this air pump! The best one is the one rated for 10 gallons. I am using the (up to 10 gallons) air pump on a big 110 gallon high tank. The tank size rating in the description means absolutely nothing. The big 40-60 (I bought first) was a hurricane with 2 air nozzles. So loud and huge I returned it. Then I got the 20-40 size and it was way too strong and noisy. I had to limit the air so it buzzed loudly. I split it into 2 hoses, one air stone and one treasure box - had to return it. It was so noisy and pumped way too much air. The 2 hoses were at least 6 feet long each too. Then I finally got the smallest one (up to 10) and it is perfect for 2 hoses into my big 110 gallon tank. It is the only one that is quiet and works well. These things are way mislabeled. I recommend the small one, not the others unless you have a 300+ gallon tank or plan to split and power 6+ hoses.
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Reviewed in the United States on May 19, 2023 by Seattle Dave
Size: up to 10-gallons
I bought one of these to power a sponge filter on my temporary 2.5 gallon betta tank and another to power a DIY brine shrimp hatchery setup. The betta is being upgraded to a 6 gallon tank in a few weeks, which will definitely test the power of this pump more than it currently is, but I don't think it will be a problem. It's plenty powerful for the sponge filter in my 2.5 gallon tank currently and I have to use a control valve to slow down the air coming through so the water doesn't end up too choppy for my betta and his snail tankmates. The noise level could be better (it seems to be more noisy than the up to 20 gallon tank rated air pump by the same brand), but overall it's very quiet and gets drowned out in the sound of the fan I have going in my room. The air pump itself is small enough it can be placed directly behind my tank on the same stand, which is convenient for access to it in case I need to do maintenance, as well. It comes with a control valve as well which is awesome! I didn't have to go spend $2 on one separately after all. Overall, can't beat the value of the item for the price. Local stores like walmart have air pumps starting at something like $10 and are twice as noisy as this one and pet stores charge even more. Awesome pump and even more amazing price
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Reviewed in the United States on October 23, 2023 by Katie Adams
Size: up to 10-gallons
Recommended by all forums. It's a quiet pump with a very low hum. Works well with my sponge filter.
Reviewed in the United States on August 10, 2026 by Amazon Customer
Size: up to 10-gallons
When used as an aquarium air pump these are quite good products. One of these low end pumps produce enough air to be split into 2 or 3 air stones of moderate bubbling. Be sure to use these with one way water valves to keep water from siphoning back down into the pump The one way valves are essential to use with this pump. If you install a valve to control air pressure, be sure to allow a 2nd valve or a 2 gang valve to relieve the excess back pressure. Your pump will wear out faster and vibrate louder if you dont allow it to push out its air. Just let the second valve bleed off the pressure while the first one controls flow to your device. Try not to get this pump wet. It is plugged into an electrical socket and can be quite hazardous to touch if water gets inside it. Also don't block the little hole in bottom with the cloth like covering. It needs that opening to get air. Also keep odors or chemicals away from this pump or that will end up getting pumped into your water. If it vibrates too loudly, try to reduce its back air pressure via a valve that allows a little air to escape. You can also take a kitchen sponge or folded cloth and lay it on that. If its still too much, try turning it upside down and laying on the sponge or cloth. Over time this type of air pump could get louder. You can usually fix this by replacing the little rubber bellow it vibrates to make air or by retightening parts inside. But at the dirt cheap price these pumps sell for, you're better off just getting a new one. For the cost, these really are amazing little pumps that often last longer than their tanks are set up.
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Reviewed in the United States on September 21, 2024 by Don Gray
Size: up to 10-gallons
Quieter than most but not the quietest I've gotten. I recommend the NICREW Nano Silent Aquarium Air Pump.
Reviewed in the United States on July 15, 2026 by Tyler Anderson