Automatic top-off, redesigned for reliability and safety.
The Fzone ATO580 (Version 2.0) is a fully upgraded auto top off system engineered to maintain stable water levels in both freshwater and saltwater aquariums. With dual optical sensors, advanced QST 2.0 safety technology, and a compact high-performance micro pump, it ensures worry-free evaporation control day after day.

Perfect for reef tanks, freshwater aquariums, and sump setups, the ATO580 helps prevent salinity swings, protects equipment, and keeps tank parameters stable—ideal for busy aquarists, work trips, and vacations.

Key Features

🔹 Upgraded 2.0 Controller (Pause + Auto Initialization)

• New FZ button allows one-click initialize, pause, or resume without unplugging.

• Ideal for maintenance and cleaning.

• Visual interface upgraded for faster feedback and clearer alerts.

🔹 Dual Optical Sensors (1 mm Precision)

• Ultra-compact 0.79" sensor fits anywhere—even nano tanks or tight sumps.

• Dual sensors spaced 0.1 cm apart detect water levels with extreme accuracy.

• Works on rimmed, rimless and sump tanks.

• Best performance in tanks with <1 cm wave fluctuation.

🔹 QST 2.0 Safety Technology

The safest ATO system in its class:

• Overfill Protection: Auto-stop with audible and visual alarm.

• Refill Time Monitoring: Stops pump if runtime exceeds safety threshold.

• Empty Reservoir Detection.

• Sensor/Controller Failure Detection.

• New flashing red light + beeping warning ensures you notice issues immediately.

🔹 Micro Whisper Pump (74 GPH)

• Silent, durable and extremely compact.

• Lifts water up to 2 meters (6.56 ft).

• Smart operation extends pump lifespan by avoiding unnecessary activations.

🔹 Strong Mounting System + Full Accessory Kit

Everything included for a complete setup:

• Magnet mount supports glass/acrylic up to 0.78" (20 mm).

• Check valve prevents backflow and siphon issues.

• 6 ft (180 cm) tubing, 7 mm inner diameter.

• Long cable lengths for flexible installation

What’s Included

• 1 × Fzone ATO580 Controller (updated version)

• 1 × Dual optical sensor module

• 1 × Micro Whisper pump

• 1 × Check valve

• 1 × 6 ft tubing

• 1 × Power adapter

• Mounting accessories

• User manual

SPECIFICATIONS

• Input: AC 100–240V, 50/60 Hz

• Output: DC 12V / 1A

• Sensor precision: 1 mm

• Pump head: 6.56 ft (200 cm)

• Flow rate: 74 GPH (270 LPH) max

• Controller–Sensor cable: 4 ft (120 cm)

• Power cable: 6 ft (180 cm)

• Tubing: 6 ft (180 cm), 7 mm ID

• Max mounting thickness: 15 mm

• Sensor size: 0.7–0.79 inches

• Tank type: Rimmed, rimless, sump

• Controls: One-click Initialize / Pause / Resume