JBJ Nano ATO Replacement Pump – Quiet Submersible Pump for Nano Auto Top-Off Systems

ATO-20-P Nano ATO Replacement Pump – Quiet Submersible Pump for Nano Auto Top-Off Systems

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Restore Peak Performance to Your ATO System

The ATO-20-P Nano ATO Replacement Pump is the original submersible pump designed for seamless compatibility with the ATO-20 Nano Auto Top-Off System. Whether you’re replacing a worn-out unit or keeping a backup on hand, this compact and ultra-quiet pump ensures continuous, reliable top-offs for your nano aquarium.

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Exact Fit for ATO-20 Systems
Engineered to work flawlessly with the Nano ATO controller and tubing, ensuring a plug-and-play replacement.

Quiet Submersible Operation
Whisper-quiet design minimizes noise, making it ideal for use in bedrooms, offices, and small living spaces.

Compact, Efficient Design
Small footprint allows for flexible placement in top-off reservoirs of all sizes without sacrificing flow performance.

Reliable Freshwater Delivery
Maintains consistent water levels by delivering precise top-offs to nano tanks up to 20 gallons.

Simple to Replace
Quick-connect fittings make installation hassle-free—no tools or modifications required.

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• ATO-20-P Replacement Pump
• Power Cable

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✅ Perfect match for ATO-20 Nano ATO System
✅ Trusted Maxum reliability
✅ Quiet and compact for any setup
✅ Easy to install and maintain

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Can this pump be used as a standalone unit?
It’s specifically designed for use with the ATO-20 Nano ATO controller. Standalone use is not recommended.

Is the power cable included?
Yes, the replacement pump includes a power cable for direct connection to your ATO-20 system.

How do I install the replacement pump?
Simply disconnect the existing pump from the tubing and power, then plug in the new unit using the same fittings and cable.