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Availability:
In Stock.
Arrives
Oct 6 – Oct 7
Recently Viewed
Style: 20-40-gallon
Features
- POWERFUL: Tetra 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.
Color: Blue
Brand: Tetra
Material: Plastic
Item Weight: 0.86 Pounds
Product Dimensions: 3.9"L x 2.8"W x 5.5"H
Color: Blue
Brand: Tetra
Material: Plastic
Item Weight: 0.86 Pounds
Product Dimensions: 3.9"L x 2.8"W x 5.5"H
Power Source: Corded Electric
Team Name: Tetra
Air Flow Capacity: 3.3 LPM
Operation Mode: Automatic
Global Trade Identification Number: 30
Manufacturer: Tetra
Capacity: 40 Gallons
UPC: 046798778530
Item Package Dimensions L x W x H: 6.32 x 4.21 x 2.91 inches
Package Weight: 0.42 Kilograms
Item Dimensions LxWxH: 4.13 x 2.75 x 6.25 inches
Brand Name: Tetra
Warranty Description: Warranty
Model Name: Tetra Whisper Air Pump 20 To 40 Gallons, For Aquariums, Powerful Airflow, Non-UL Listed,Blue
Suggested Users: unisex-adult
Number of Items: 1
Part Number: 75077853
Style: 20-40-gallon
Included Components: Tetra Whisper Air Pump 20 To 40 Gallons, For Aquariums, Powerful Airflow, Non-UL Listed,Blue
Size: 20-40-gallon
Date First Available: October 19, 2006
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Oct 6 – Oct 7
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
Style: 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
Style: 20-40-gallon
so I really don't have much to say about this one, the air flow is pretty good, I haven't had any issue... It is pretty durable though (my cats wanted to make sure it wasn't breakable) But this air pump belongs to my tank in my house bathroom. So the noise isn't as bad as you would think. Plus this sits on a glass surface of mine so the noise is barely even there. However my bubble wall did break so the noise has been a bit louder than usual, but that only has to do with the bubble wall affecting the sound. But again it's in my bathroom so you can't even hear it when you close the door to our bathroom. It's been working fine, the hose for me though is a little short, I have a pretty bit tank and the hose it comes with isn't as big as I would have hoped so if you have a pretty decent sized tank I would think about getting another hose for it possibly. So yeah, it's quiet I wouldn't say its obnoxiously loud or overbearing really even when it is loud. If the sound DOES get to that level, your equipment is probably faulty, and I suggest sending it back and getting your money if that happens.. But mine has been working fine. -xoxo Happy Shopping
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Reviewed in the United States on October 24, 2023 by Jasmine
Style: 20-40-gallon
I read everyone's reviews and have to say, call their customer support before giving a bad rating. I contacted them, received a response on the same day and now I love this quiet pump. It was all about the flow valve and regulator I attached to it between the unit and the air stone. Once I opened the flow valve all the way the vibration noise stopped. Customer service was fantastic.
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Reviewed in the United States on August 3, 2025 by CB
Style: 20-40-gallon
No complaints about how the pump is working. But I was a bit disappointed when it arrived, because I realized that it doesn’t come with tubing or an air stone. I feel like the description should have made this clear. The description doesn’t explicitly say that tubing/stone is not included. Maybe this is my fault, but I feel like the description should make it very clear that you have to buy additional products to be able to use this. I assumed that it would contain everything I needed to use it in my tank. I didn’t realize that I would also have to go out and buy tubing and an air stone. I wish they had made this more clear in the item description. But despite this, I’m happy with how the actual pump works.
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Reviewed in the United States on December 25, 2024 by AmazonCust0mer
Style: 20-40-gallon
Its the standard equipment. I believe this is the best item Tetra makes (Water additives and fish food also top quality) aquarium air pump. Works in my 35 gallon tank. One output is fine for the side that doesn't get much circulation. I had it in my grow tent to try to make humidity but I went with a 15 watt air pump and used this 3 watt for it's intended purpose. (Humidifier and distilled water cost a lot) 🪣🫧 Tetra®️ water filters (lasted a couple years but burnt up on a short power outage) and aquarium heaters (it's my back-up, I keep two), aren't the greatest. They work but there's better options for the flora and fawna in your microenvironments.
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Reviewed in the United States on May 28, 2025 by Mike
Style: 20-40-gallon
The Tetra Whisper Easy to Use Air Pump is a fantastic addition to my aquarium setup! It's incredibly quiet, which is a huge plus since I don’t want any distractions from the soothing sounds of the water. The pump works efficiently, providing a steady and reliable flow of air to keep my fish happy and the water oxygenated. Installation was simple, and it comes with all the necessary parts to get it up and running right away. I also love how compact it is, so it doesn’t take up much space, and the design is sleek and unobtrusive. If you're looking for a low-maintenance and high-quality air pump for your aquarium, I highly recommend this one. It does the job without any fuss and keeps everything running smoothly. ⭐⭐⭐⭐⭐
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Reviewed in the United States on December 9, 2024 by PapaKnowsStuff
Style: 20-40-gallon
Great for the aquarium. Been working great for months
Reviewed in the United States on July 8, 2025 by Christina Helzer-Schneidermann