Useek Auto Top Off (ATO) System for Saltwater & Freshwater Aquariums

Overview

Evaporation is a constant reality in any aquarium. In saltwater setups, wasting water can raise salinity if top‑offs aren’t consistent. The Useek Auto Top Off (ATO) system automatically maintains the water surface, helping to keep salinity and depth stable so you can enjoy a steadier viewing experience.

Compact design that fits your setup

With a nano footprint of about 0.7 inches in diameter, this ATO integrates neatly into rimmed or rimless tanks and sumps without drawing attention. Its slim profile makes it a seamless addition to tight cabinets or shallow sumps while preserving the tank’s clean look.

Smart protection with QST

Real-time calculations determine the ideal fill time, with visual alerts and an automatic pump stop if refilling takes six times longer than expected. This helps guard against overfilling, dry running, and sensor malfunctions.

Easy installation and flexible use

The kit includes everything you need for a hassle-free setup, making integration straightforward in rimmed or rimless aquariums. It’s a thoughtful gift for fellow hobbyists who value reliable automation.

Warranty and support you can count on

Enjoy a two-year warranty and responsive customer service. If questions arise, friendly support staff are ready to help you get the most from your ATO system.

Key benefits at a glance

• Maintains stable water level and salinity in saltwater tanks
• Compact, space-saving design that fits nano to larger setups
• Real-time alerts and automatic shutoff protect against common failures
• Easy installation with broad compatibility for rimmed and rimless tanks
• Two-year warranty and helpful customer support

What’s included and how to use

• Complete ATO kit with pump, sensors, tubing, and fittings
• Clear setup instructions for rimmed and rimless tanks
• Tips for optimal placement in your sump or cabinet