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Duetto 2 Dual-Sensor ATO Aquarium Auto-Top-Off System - XP Aqua
XP Aqua$167.99With huge features jammed in a tiny package, the Duetto2 is the perfect ATO for your aquarium. XPAqua’s proprietary dual-optical sensor packs two precise level sensors in one incredibly small... -
Apex ATK V2 Automatic Top-Off Kit ATO (ATK) - Neptune Systems
Neptune Systems$269.99The ATK (Automatic Top-off Kit) is a simple, standalone, and complete solution for replacing water lost to evaporation. The new aquarium hobbyist has many challenges, but none is more annoying... -
(DISCONTINUED) HC-820M Digital Heater Controller +Sensor - Finnex
Finnex$54.99The HC-820M Finnex heater controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from the... -
HC-910M Digital Dual Display Heater Controller - Finnex
Finnex$69.99The HC-910M is a high-end, dual-display digital aquarium heater controller from Finnex, designed for precise temperature management with bright LED readouts showing both current and set temperatures... -
HC-820W Digital Heater Controller +Sensor - Finnex
Finnex$59.99The HC-820M Finnex heater controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from the...