
1 of 7 · Click image to view larger
Automatic Top-Off SystemsPawlivy product details
Auto Top Off System for Saltwater Aquarium
Dual High-Precision Optical Sensors: Fitted with two advanced optical sensors—one monitors water level to trigger timely replenishment, while the other prevents overflows, ensuring your aquarium maintains a stable water level and avoids excess water spillage.
$40.57
100 available
Color: Blue-2
SKU: PLY-013356
Buy this selection now. Review delivery and payment details at checkout.
- Color
- Blue-2
About this item
- Dual High-Precision Optical Sensors: Fitted with two advanced optical sensors—one monitors water level to trigger timely replenishment, while the other prevents overflows, ensuring your aquarium maintains a stable water level and avoids excess water spillage.
- Compact Design: With a minimal footprint of just 0.8 inches, this ATO system features integrated 1mm high-precision sensors, making it perfect for both rimmed and rimless tanks of all sizes, without taking up valuable space.
- Safety Features: In addition to the anti-overflow sensor, the ATO system includes a sophisticated algorithm to prevent water overfilling. Upon startup, it assesses your tank size, calculates the required water refill time, and sets up safeguards to avoid any accidental overflows.
- Complete Set of Accessories: The package includes a 12V DC water pump (1.5x1.5x2.0 inches, 74GPH, 8.2 ft head), power adapter, anti-siphon check valve, 1.5-meter water pipe, mounting bracket, user manual, and ATO controller—everything you need to set up and run your system.
- Versatile & Reliable: Made for both freshwater and saltwater aquariums, this ATO system is perfect for various setups including AIO tank sumps, bottom-filter sumps, and freshwater display tanks.

Additional information
| Material | Plastic |
|---|---|
| Power Source | Corded Electric |
| Maximum Flow Rate | 74 liters per hour |
| Maximum Lifting Height | 8.2 feet |
| Voltage | 12 volts |
| Number of Packs | 1 |
| Flow Rate | 74 liters per hour |
| Material Type | Plastic |
| Product Style | Blue - Pump(12V) |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Specific Uses For Product | Indoor |
| Included Components | Sensor, Power adapter, Pump |
Pawlivy details
More about this product











Dual High-Precision Optical Sensors with a Compact and Space-Saving Design
Equipped with two advanced optical sensors: The "LOW" position detects the water level and triggers timely replenishment. The "HIGH" position will prevent overfilling. Compact size: the entire optical sensor unit ONLY 0.79 inches diameter.

Anti-overflow safety algorithm
Combining the optical auto refilling sensor and an anti-overfilling sensor in one pack, along with integrated QST v2.0, ETFT, and AFT algorithm, precisely keeps the water level in right position and provides real-time protection against any failure and abnormality.

Built-in LED indicators to show working status!
Alternating red and blue: device is booting up/initializing. Solid blue LED: Stand by. Slow flashing blue LED: pump is refilling the water. Fast flashing blue LED: Water lever reached HIGH sensor, anti-overfilling works. RED LED flashing: QST 2.0 alarm. 6 times longer than ETFT.


Specification
Power AC 100-240V/50-60 Hz input, DC 12V/1A output Power cable length 6ft(180 cm) Sensor precision 1mm Pump head 8.2 feet (250 cm) Pump flowrate 74 gph (280 lph) Max Mounting Thickness 15mm Tubing 6feet(180cm), 7mm inner diameter






