Search  for anything...
Tetra

Tetra Whisper IQ Power Filter 20 Gallons, 130 GPH, with Stay Clean Technology

  • Based on 12,054 reviews
Condition: New
Checking for product changes
$14.09 Why this price?

Buy Now, Pay Later

As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Jul 23
Order within 2 hours and 13 minutes
Available payment plans shown during checkout

Recently Viewed

Size: 20-Gallon


Features

  • QUIET AQUARIUM FILTER: The Tetra Whisper IQ Power Filter with Stay Clean technology contains a sound shield for quiet filtration less than 40 dB.
  • SELF PRIMING: Submerged motor starts up with no priming required.
  • CAPACITY: The Tetra Whisper IQ 20 Power Filter works in filters up to 20 gallons (130 GPH).
  • STAY CLEAN TECHNOLOGY: By maintaining healthy pH levels, creates easier maintenance for healthier fish.
  • CARTRIDGE REFILLS: Change cartridges monthly; uses large-sized Tetra Whisper Bio-Bag Filter Cartridges (refills sold separately).

Description

The Tetra Whisper IQ Power Filter with Stay Clean technology keeps aquarium water clean and clear. This quiet filter contains a soft barrier between the motor and the filter that serves as a sound shield to minimize noise. The bio- scrubber cultivates aerobic bacteria to remove toxic ammonia and nitrite, and the smart path spillway oxygenates the water and agitates the surface. With a self-priming, submerged motor and adjustable intake to fit your aquarium’s needs, the Tetra Whisper IQ Power Filter is perfect for use with both freshwater and marine fish. Works with easy-to-change Tetra Whisper Bio-Bag Filter Cartridges with Stay Clean technology – helps reduce buildup on aquarium glass, bind small dirt particles to make them easier to filter and stabilize pH levels to prevent crashes, meaning easier aquarium maintenance for you. Tetra Whisper IQ Power Filters are available in a range of sizes to fit your aquarium. This Tetra Whisper IQ 20 Power Filter treats aquariums up to 20 gallons (130 GPH). Convenient color coding makes it simple to choose the correct size replacement cartridge – use with size large Tetra Whisper Bio-Bag Filter Cartridges (blue packaging). 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.

Product Dimensions ‏ : ‎ 6.88 x 6 x 7.75 inches; 2 Pounds


Item model number ‏ : ‎ 78001-00


Department ‏ : ‎ Unisex-Adult


Batteries ‏ : ‎ Product Specific batteries required.


Date First Available ‏ : ‎ February 6, 2017


Manufacturer ‏ : ‎ Tetra


Country of Origin ‏ : ‎ China


Best Sellers Rank: #2,182 in Pet Supplies (See Top 100 in Pet Supplies) #4 in Aquarium Filters


#4 in Aquarium Filters:


Item Weight: 2 pounds


Department: Unisex-Adult


Manufacturer: Tetra


Country of Origin: China


Item model number: 78001-00


Batteries: Product Specific batteries required.


Date First Available: February 6, 2017


Item Package Dimensions L x W x H: 7.99 x 7 x 6.06 inches


Item Dimensions LxWxH: 6.88 x 6 x 7.75 inches


Item Weight: 2 Pounds


Brand Name: Tetra


Target Audience Keyword: fish, Fish


Directions: See label for details


Warranty Description: .....


Model Name: Whisper IQ Power Filter


Color: Black


Size: 20-Gallon


Material: Plastic


Age Range Description: Senior


Number of Items: 1


Style: 20-Gallon


Included Components: .....


Specific Uses for Product: Weaning


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 23

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great price, small but does an amazing job cleaning
Size: 60-Gallon
I bought this filter after the filter I had for two years stopped working. This was the best price for the size I needed. Once I pulled it out of the box it was much smaller than I expected, I wasn’t sure how it was going to do in my 55gallon tank. With life & everything we had going on it took us a bit to get a new filter after our old one stopped working. During this time my tank got bad, it was green and an absolute mess. My tank was horribly disgusting and I didn’t have high hopes that this filter was going to do the job. I put this filter in and my tank is crystal clean over night. I’ve had 4 or 5 different filters over the years, this one is by far the quietest, even on the highest flow. It’s a very simple, small filter, with mighty cleaning ability. ... show more
Reviewed in the United States on June 20, 2025 by MW7
    • Excelente
Size: 45-Gallon
Review Image by Me mandaron la talla equivocada Me mandaron la talla equivocada
Yo compre el de 45 gal. Chicos es excelente. Mi pecera es de 25 galones pero realmente estaba muy sucio ya que el filtro anterior se me había roto. Este nuevo filtro es impresionante. Me ha limpiado toda el agua.
Reviewed in the United States on June 11, 2025 by Me mandaron la talla equivocada Me mandaron la talla equivocada
    • Best filter around!
Size: 60-Gallon
Using this on my 40 gallon tank with goldfish and a couple catfish! Keeps the water crystal clear without water changes! Also replacing the filter cartridges regularly is a scam. Wait till water barely flows through the filter then rinse off in (fishtank) water. Do this until the filter is falling apart then replace it. ... show more
Reviewed in the United States on May 31, 2025 by Zacmanrules5
    • Missing Filter Intake Guard- Company Sent A New One
Size: 45-Gallon
Review Image by Tianna Tianna
Review Image by Tianna Tianna
We got this filter for our new tank and loved the other reviews of how it sounded. We thought it was peaceful and such a perfect fit! Unfortunately one morning we woke up to one of our catfish missing.. we found him in half stuck in the intake filter. We didn’t realize that we were missing the guard to prevent the fish from getting sucked up (this was our first fish purchase as adults). I immediately called the company to see what could be done and they apologized for the loss of our fish and are sending over the guard to us immediately. They also gave some advice on what to do for now while we wait for the guard to come in. You can tell by the pictures the big difference. At first we just thought we didn’t get the model that came with the filter, but after thoroughly reading the instructions/the box, we realized we were wrong and it was missing. So please just be careful and double check !! Wouldn’t want anybody else’s fish going the way our catfish did. RIP Captain Jack 🙏🏼 ... show more
Reviewed in the United States on April 24, 2025 by Tianna Tianna
    • Great product. Quiet and super powerful
Size: 45-Gallon
Works great. Wow it’s got some power and super quiet too. Also I love the goow rate adjuster. I use it in medium flow but it can be very powerful.
Reviewed in the United States on June 7, 2025 by peggy misencik
    • Good purchase
Size: 20-Gallon
This is awesome for my tank. Easy to clean and keeps the tank clean and moving. I’ve got a 20 gallon tanks with bata, neons and locked, los of plants. I clean the tank once evey 2 month or sooner due to algae mostly.
Reviewed in the United States on May 26, 2025 by Kim Helmer
    • Aquarium filter
Size: 45-Gallon
It is very quiet easy to install.You do not hear it at all. I am loving it
Reviewed in the United States on June 11, 2025 by Carla Bishop
    • Very good, sticks out behind the tank
Size: 45-Gallon
I wanted to try a different option after my Whisper 20i started making a rattling noise. It is about the same noise level as the internal filter (before it broke). I had to get the 45 version because the others were out of stock, and it just barely fits in my 30-long tank. I like the adjustable flow; it can be calm or turbulent depending on what your fish like. It is much less obtrusive inside the tank, but quite large outside. Bonus points for the easy-to-read instructions with replacement parts list. I think when this eventually breaks I will try a canister filter so my fish experience less noise in the water. ... show more
Reviewed in the United States on May 8, 2025 by Matthew Foran

Can't find a product?

Find it on Amazon first, then paste the link below.