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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
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We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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Our team usually answers your questions within 24 hours
Submersible aquarium filter combines filtration, oxygen supply, and water circulation all in one convenient package, and is used as additional bio filtration to your aquarium. Will make your aquarium water clearer and of better quality.
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Flow regulatorAdjust the size of the water flow through rotation (the size of the water flow can only be adjusted between 50%-100%). |
Oxygen regulating valveCan adjust the air flow, air strength, and pressure to achieve a good oxygenation effect (need to be exposed to the water surface). If oxygenation is not needed, it can be turned off or removed. |
Adjusting the skateboardBy adjusting left and right, you can freely choose the water inlet method. You can choose between a bottom inlet and a side inlet (Adjust to the middle position, and both the bottom and side can absorb water at the same time, which can effectively avoid small fish being trapped). |

Seaoura submersible water filter, quiet filtration of less than 30 dB. It won't disturb your lovely fish and your everyday life. No need to connect an additional air pump, safe and reliable electric filter, durable, and long-lasting.


Q1: What is a tumble filter, and how does the K1 media work?
A1: The tumble filter uses K1 fluid bed filter media that continuously tumbles in the water flow. This movement helps beneficial bacteria grow faster and stay active, improving biological filtration. The constant collision between media also helps “self-clean” the filter material, reducing clogging and eliminating the need for frequent replacement.
Q2: Do I need to replace the filter media in this aquarium filter?
A2: No. The K1 fluid bed filter media is designed for long-term use. Thanks to its self-cleaning and self-regenerating movement, the media does not need regular replacement under normal conditions.
Q3: How quiet is the Seaoura internal aquarium filter?
A3: The filter operates at less than 20–30 dB, making it extremely quiet. It is suitable for bedrooms, offices, or living spaces where low noise is important, and it will not disturb fish or daily activities.
Q4: Can I adjust the water flow and oxygen levels?
A4: Yes. The filter includes both a water flow regulator and an air regulator. You can adjust water flow between 50% - 100% and control oxygen output depending on your aquarium needs. This makes it suitable for different fish and shrimp tanks.
Q5: What is the purpose of the adjustable water inlet design?
A5: The adjustable “skateboard” inlet allows you to choose bottom suction, side suction, or both. This helps prevent small fish or shrimp from being trapped while improving cleaning efficiency in different tank setups.
Q6: How should I position the filter for best oxygenation?
A6: For optimal oxygen injection, the filter should be positioned about 1.2 inches below the water surface. If placed too deep, oxygen output may decrease, and the filter may function mainly as a water circulation only.
Q7: Does this filter include multiple filtration stages?
A7: Yes. It combines multi-layer filtration, including biochemical cotton for debris removal and K1 media for biological filtration. This dual system helps maintain clear water and a stable aquarium environment.
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