Neptune Liquid Level Sensor 35"

Reliable Liquid Level Monitoring for Large Reservoirs & Water Change Systems

The Neptune Liquid Level Sensor (LLS-35) offers accurate, real-time measurement of liquid depth in large water reservoirs, saltwater storage tanks, or water change containers. Monitor your aquarium system’s water levels easily via your Apex Fusion app — helping prevent overflows, dry runs, or equipment failure.

Key Features & Benefits

• Measures water depth in inches or centimeters

• Ideal for large reservoirs, saltwater storage tanks, and water change barrels

• Seamless remote monitoring through Apex Fusion

• Patented resistive sensing ensures accuracy and reliability

• Supplied with a mounting clip for easy installation

• Compatible with A2 Apex (with FMM) and A3 Apex systems

• 3-meter cable for flexible sensor placement

How It Works

This advanced sensor detects liquid depth via a slim, waterproof sheath. As water makes contact with the sensor material, it transmits depth readings to your Apex system, visible instantly via the Fusion dashboard.

Installation & Compatibility

Mount the 35” LLS sensor to the side of your storage container, reservoir, or large sump using the included clip. Ideal for aquarists with automated water change setups or large ATO systems.

Compatibility:
✔️ A2 Apex (with FMM module)
✔️ A3 Apex (via embedded FMM ports)

Not compatible with A1 Apex Classic systems.

Best Uses

• Monitor large saltwater mixing and storage reservoirs

• Track water change containers’ fill levels

• Manage ATO systems for extra-large aquariums

• Ensure consistent liquid levels in dosing or kalkwasser reservoirs

Sensor Responsiveness & Accuracy

• Detects water level changes at ~15 seconds per inch

• Accurate to ~0.2 inches once calibrated
  Note: Not designed for immediate auto top-off control needs.