Description
xEvaporation is a constant in any aquarium. The Useek Auto Top Off (ATO) System helps you maintain a steady water level and a stable salinity mindset, whether you run a reef tank or a freshwater setup. Rather than manual top-offs, this compact system works in the background to keep your tank balance from drifting, so you can focus on enjoying the view and the vibrant life inside your tank.
Why an ATO matters
In saltwater systems, water continually evaporates, which raises salinity concentrations over time. An automated top-off replenishes fresh water as needed, helping to keep salinity within a more consistent range. The result is a calmer, more predictable environment for corals, fish, and invertebrates, and less daily maintenance for you.
- Stability: helps maintain salinity and water level despite evaporation
- Peace of mind: reduces guesswork during long days away from the tank
- Cleaner aesthetics: discreet design fits alongside rimmed or rimless tanks
Space-saving, compact design
With a nano footprint of just 0.7 inches in diameter, the Useek ATO is unobtrusive yet capable. It blends into your tank setup, whether you prefer a clean rimmed look or a modern rimless aesthetic, so the system remains out of sight and out of the way while still doing the job.
Real-time protection with QST
QST technology continuously evaluates fill timing and usage. It provides visual alerts and will stop the pump if refilling takes longer than expected, helping protect against overfilling, dry running, and sensor malfunctions. This approach aims to guard your equipment and keep your tank safer day-to-day.
Easy installation & versatile use
The kit arrives ready to install, with everything needed for quick setup in both rimmed and rimless tanks. It’s a practical gift for aquarium enthusiasts and a thoughtful addition to any hobbyist’s toolkit, offering a reliable automation option without complicated wiring or adjustments.
- All-in-one kit for straightforward setup
- Works with rimmed or rimless aquariums
- Supportive customer service and hassle-free replacement options
Warranty & support
Useek backs the Auto Top Off with a two-year warranty and responsive customer service, delivering confidence alongside the product. Expect helpful guidance if you ever have questions or need assistance with setup or operation.
FAQ
Q: What is the Useek Auto Top Off (ATO) and how does it help my aquarium?
A: ATO maintains water level during evaporation, helping stable salinity and reducing manual top-offs.
Q: Is this system compatible with both rimmed and rimless tanks?
A: Yes—designed for rimmed and rimless tanks with a compact 0.7-inch footprint.
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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