Kamoer ATO One2 Auto Top Off System | Aquarium Water Filler
Kamoer ATO One2 Auto Top Off System | Aquarium Water Filler
Kamoer ATO One2 – Smart Automatic Top-Off System for Aquariums
Keep your fish tank or reef aquarium at a perfectly consistent water level — hands-free, around the clock. The Kamoer ATO One2 is a compact, whisper-quiet automatic top-off (ATO) system designed for freshwater, saltwater, and planted tanks. Its precision optical liquid-level sensor continuously monitors water levels and triggers the built-in pump only when replenishment is needed, so evaporation never threatens your aquatic environment again.
Key Features
- Precision Optical Liquid-Level Sensor: Uses an infrared optical sensor — no floats, no moving parts — for highly accurate, contact-free water level detection that works in saltwater and freshwater alike.
- Fully Automatic Replenishment: Detects a drop in water level and quietly pumps fresh water back to the set mark without any manual intervention.
- Silent Operation: Ultra-low-noise pump design keeps your display tank environment calm and undisturbed for fish and corals.
- Anti-Overflow Protection: Smart logic halts the pump the moment the target water level is reached, preventing accidental overfilling.
- Anti-Dry-Run Protection: Automatically cuts power to the pump if the top-off reservoir runs empty, protecting the motor from damage.
- Wide Tank Compatibility: Works with marine (reef/FOWLR), freshwater, and planted (Dutch/nature aquarium) setups of various sizes.
- Compact & Space-Saving Design: Weighs only 500 g and fits neatly in sumps, cabinets, or small top-off reservoirs.
- Universal Voltage: Accepts 110–240 V input (DC 12 V adapter included), making it suitable for use worldwide.
Specifications
| Model | ATO One2 |
| Compatible Tanks | Marine, Freshwater, Planted |
| Power | 6 W (pump) / 12 W (max) |
| Power Adapter | DC 12 V, 2 A / 1 A |
| Input Voltage | 110–240 V AC (universal) |
| Cable Length | 1.6 m |
| Material | ABS plastic |
| Weight | 500 g |
| Working Temperature | 0–40 °C |
| Battery Required | No |
| Country of Origin | Made in Mainland China |
Why Consistent Water Levels Matter
Evaporation in aquariums — especially reef tanks — raises salinity and stresses livestock. Maintaining stable water parameters is one of the most important aspects of aquarium keeping. The Kamoer ATO One2 automates this task completely, reducing the need for daily top-offs and giving you more time to enjoy your aquarium. Learn more about proper aquarium water quality from the U.S. Environmental Protection Agency's water quality resources.
What's in the Box?
- 1 × Kamoer ATO One2 Main Unit
- 1 × Optical Liquid-Level Sensor
- 1 × DC 12 V Power Adapter
- Tubing & Mounting Accessories
Quality Assurance
Every Kamoer ATO One2 undergoes a rigorous 48-hour continuous operation test before shipment, and is backed by a 1–2 year manufacturer warranty. Contact us directly for any quality concerns and we'll make it right.
Frequently Asked Questions
Q: Is the Kamoer ATO One2 suitable for saltwater reef tanks?
A: Yes. The ATO One2 uses a non-contact optical sensor that is not affected by salt creep or mineral deposits that can cause float-style sensors to malfunction. It is fully compatible with marine, reef, FOWLR, freshwater, and planted aquariums.
Q: How does the anti-overflow protection work on the ATO One2?
A: The optical sensor continuously monitors the water level. As soon as the water reaches the pre-set target level, the system immediately stops the pump, preventing any risk of overfilling your tank or sump.
Q: What happens if my top-off reservoir runs out of water?
A: The ATO One2 features built-in anti-dry-run protection. If the source reservoir is empty and the pump runs without water, the system will automatically cut power to the pump to prevent motor damage.
Q: Does the Kamoer ATO One2 work with a standard electrical outlet?
A: Yes. The included power adapter accepts universal input voltage of 110–240 V AC, so it works with standard outlets in North America, Europe, Asia, and most other regions worldwide.
Q: How noisy is the ATO One2 pump during operation?
A: The ATO One2 is engineered for silent operation. Its low-noise pump design ensures it runs quietly in the background without disturbing fish, corals, or the ambiance of your living space.