Description
xKeep salinity stable and your aquatic life thriving with the Useek Auto Top Off (ATO) system. Designed for both reef and freshwater tanks, this compact unit quietly watches water levels and helps prevent risky fluctuations as water evaporates.
Why you need an ATO
In marine and reef setups, evaporation naturally increases salinity when surface water diminishes. Without a reliable top-off, salinity shifts can stress corals, fish, and beneficial bacteria. An ATO automates refill, supporting a steady environment without the need for constant manual dosing.
- Automatic water replenishment helps maintain stable salinity and consistent tank levels.
- Quiet operation and a space-saving footprint blend neatly with rimmed or rimless tanks.
- Smart safety features monitor refills and reduce risk of overflow or sensor faults.
Smart safety with QST
The system uses real-time calculations to optimize fill time. If refilling takes longer than expected, you’ll see visual alerts and the pump pauses to prevent overfilling, dry running, or sensor misreads.
Simple installation, versatile use
Everything you need is included for a quick setup. It works with both rimmed and rimless tanks and makes a thoughtful gift for fellow aquarium enthusiasts who value reliability and a clean workspace.
- All-in-one kit designed for hassle-free integration into many setups.
- Fits neatly in tight spaces, maintaining aesthetics while protecting aquatic life.
Durability, warranty, and support
Enjoy a two-year warranty and responsive customer service. A friendly replacement policy and knowledgeable assistance are available to help with questions or setup tips.
Note: the blue finish adds a sleek accent to your equipment area while remaining discreet behind the tank glass.
FAQ
Q: What is the Useek Auto Top Off system designed to do?
A: It automatically refills aquarium water to help maintain stable salinity and level, suitable for reef and freshwater tanks.
Q: What warranty and support come with Useek Auto Top Off?
A: The product includes a two-year warranty and responsive customer service with a replacement policy.
Shipping & Return
xReturns Policy
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.
Shipping
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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