Search  for anything...

Aquarium Internal Filter for 20-50 Gallons, Ultra-Quiet Fish Tank Filter Biochemical Filtration 320GPH Powerful Pump Submersible Aquarium Filter Tank Clear Air Supply

  • Based on 262 reviews
Condition: New
Checking for the best price...
$19.98 Why this price?
Save $12.99 was $32.97

Buy Now, Pay Later


As low as $4 / 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

FREE 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 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Wednesday, Sep 17
Order within 14 hours and 17 minutes
Available payment plans shown during checkout

Style: 13W Filter


Features

  • Efficient & Quick Filtration: Equipped with a powerful motor and 360 large area bio filter sponge, our aquarium internal filter effectively removes impurities, debris, and harmful substances, ensuring crystal clear water.
  • Powerful Water Circulation: The included 320 GPH filtration pump delivers strong water circulation and oxygenation, promoting a healthy ecosystem for your fish and aquatic plants. Suit 20-50 gallon tanks.
  • Easy Installation: Quick and simple setup with included powerful suction cups and instructions. Easy to remove the sponge for cleaning or replacing other filter media.
  • Space-Saving Design: The compact and sleek design of our fish tank filter maximizes the available swimming space for your fish while providing efficient filtration, ensuring both beauty and functionality.
  • Quiet: Say goodbye to noisy filtration systems. Our aquarium filter operates silently, ensuring a tranquil and stress-free environment for both you and your aquatic companions.
  • Safty: Please Fully Submerge this fish filter in water to prevent overheating and noise. Each pump is water-tested and high-voltage checked before shipping to ensure safety.

Brand: OQTTNEO


Color: Black


Material: Plastic


Style: 13W Filter


Product Dimensions: 2.6"L x 2.6"W x 8.3"H


Power Source: Corded Electric


Item Weight: 400 Grams


Maximum Flow Rate: 3.2E+2 Gallons Per Minute


Manufacturer: OQTTNEO


Brand: ‎OQTTNEO


Color: ‎Black


Material: ‎Plastic


Style: ‎13W Filter


Product Dimensions: ‎2.6"L x 2.6"W x 8.3"H


Power Source: ‎Corded Electric


Item Weight: ‎400 Grams


Maximum Flow Rate: ‎3.2E+2 Gallons Per Minute


Manufacturer: ‎OQTTNEO


Part Number: ‎AF13W


Item Weight: ‎14.1 ounces


Item model number: ‎AF13W


Is Discontinued By Manufacturer: ‎No


Wattage: ‎13 watts


Item Package Quantity: ‎1


Included Components: ‎1 PCS Aquarium Internal Filter for 20-50 Gallons


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 20, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 17

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.

Top Amazon Reviews


  • Works just like it should
Style: 13W Filter
Packaging was great. No damages. Water filter came with all its parts and it was already set up. It started right up as soon as I plugged it in. Filtered my 20 gallon tank perfectly. Noise is barely noticeable. Size is perfect for our tank and my turtle loves the water flow. Amazing product. Thank you. Satisfied customer. ... show more
Reviewed in the United States on December 21, 2024 by Sese

  • effective, quiet, and easy to maintain
Style: 13W Filter
I recently purchased the Aquarium Internal Filter for 20-50 Gallons, and I’m really pleased with its performance. The first thing I noticed is how ultra-quiet it runs—it’s barely audible even in a quiet room. My 40-gallon tank has been crystal clear since I started using it. The biochemical filtration does a great job of maintaining water quality, ensuring the fish are in a healthy environment. Installation was quick and easy, with clear instructions. It offers adjustable flow settings, which is ideal for customizing the water flow based on the type of fish you have. Another big plus is its compact size—it doesn’t take up much space in the tank, leaving plenty of room for plants and decorations. The filter is also easy to clean, and maintenance has been a breeze. If I had one critique, it would be that the suction cups could be a little stronger, as the filter shifts slightly from time to time. However, this is a minor issue and doesn’t detract from its overall performance. This filter is a fantastic value for anyone with a 20-50 gallon tank. It's effective, quiet, and easy to maintain, making it a great choice for both beginners and experienced aquarists! ... show more
Reviewed in the United States on September 17, 2024 by The ONE CA

  • Great filter!
Style: 13W Filter
I purchased this to provide extra filtration and flow in my reef tank. It is affordable, has excellent flow, and the design of the filter part makes it easy to customize with different media if you want to. I am using the foam it came with, but wrapping a layer of 100 micron filter mat over it and it works perfectly. ... show more
Reviewed in the United States on December 23, 2024 by Indigoze

  • Works great
Style: 13W Filter
Not as quiet as expected but not bad. Easy instructions, works great.
Reviewed in the United States on November 18, 2024 by Christina

  • Hard water flow
Style: 13W Filter
The product works well I have been using it for a week and had no problems with durability. One drawback is the fact that the flow of the pump is a little too hard. The filter works well my water is clear and clean. Noise level is good it’s not silent but it isn’t to loud either I sleep in the room that i am using it in and have had no problems with it being to loud. ... show more
Reviewed in the United States on October 4, 2024 by Brenna

  • Love it!
Style: 13W Filter
This is my favorite filter of all the different types I've bought for my fish over the years. Very easy to assemble (the video on the product page shows how to put it together) and it's so easy to clean. It can be placed almost anywhere in the tank, unlike the ones that have to hang over the edge of the tank. It produces a bubbling noise, but not the trickling water noise that a lot of other filters produce. It's also much less expensive than other types of filters. ... show more
Reviewed in the United States on September 28, 2024 by Becky

  • Bad!
Style: 13W Filter
I bought this based on good reviews, It was the worst mistake I have ever made! My goldfish of 2 years died because the pump stopped working over night! I'm so sad about it, this is not a good filter the suctions don't hold up the filter well.
Reviewed in the United States on June 19, 2024 by Cynthia perez

  • Good little pump
Style: 13W Filter
This is a good secondary circulation pump. Easy to use and doesn't take a lot of space.
Reviewed in the United States on December 23, 2024 by David

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...