Nano Auto Top Off ensures precise water control for compact aquariums. Slim 0.7-inch sensor, dual optical monitoring, 74 GPH pump, strong magnets, and advanced safety tech. 2-year warranty with 24/7 support included.

Small in size; install in a compact space, install in All-In-One tanks and bottom filtration Sumps. ATO is nano at only 0.7 inches.
Includes <1mm dual precision optical sensors,the auto top off system watches the water level in real time, ensures the aquariums water fluctuation is less than 0.6 centimeters.
New technologies that allow the Auto top off to be more reliable; EFTT(Extened-Filling-Time Technology), AFT(Anti-fluctuation Technology) techology, & upgraded QST 3.0 (Quick-Security Technology). EFTT can recognize your aquariums size & will dertimine how long it takes to fill to the desired level. QST alerts you in real-time when the ato is finished & prevents over filling. AFT measures the water level & ensures the ATO doesn't activate the pump unnecessarily.
All accessories included in the package. Strong magnets can support aquarium wall thickness up to 0.78 inches (20mm). Check valve prevents backflow & will not drain your main display. 74 gallon per hour water pump will lift water up to 2 meters ensuring water delivery to even the biggest aquariums.
2-Year Warranty & 24/7 Customer Support:provides a comprehensive 2-year warranty along with 24/7 online customer support. If you have any questions or encounter any issues with your product, our team is always available to assist you—anytime, anywhere.