D-D Advanced ATO

D-D Advanced ATO (Auto Top-Off System)

The D-D Advanced ATO is a reliable and intelligent auto top-off system designed to maintain stable water levels in marine and freshwater aquariums. By automatically replacing evaporated water, it helps keep salinity and water parameters consistent—essential for coral health and overall system stability.

Equipped with precise optical sensors and built-in safety features, including overfill protection and audible alarms, it provides dependable, hands-free operation. Easy to install and suitable for sump or rear-chamber setups, the Advanced ATO is ideal for reef keepers looking for accurate, low-maintenance water level control.