Neptune Systems PM2 Salinity Module – APEX Add-On for Conductivity Monitoring

🧪 Product Overview

The Neptune Systems PM2 Salinity Module is a powerful expansion for APEX aquarium controllers, allowing you to monitor salinity and temperature with pinpoint accuracy. Designed for use with the Neptune conductivity probe (sold separately), the PM2 delivers reliable data for maintaining ideal salinity levels in reef aquariums. It also includes a dedicated port for temperature compensation, ensuring precise readings regardless of fluctuations.

✨ Key Features and Benefits

• Monitors Salinity in Real-Time – Measures conductivity in microsiemens to calculate salinity
• APEX Expansion Module – Easily integrates with your APEX system for advanced monitoring
• Supports Temperature Compensation – Built-in port for a second temp probe
• Essential for Reef Stability – Helps maintain consistent salt levels in marine tanks
• Compact and Expandable – Ideal for tanks of all sizes with APEX ecosystem compatibility

📦 What’s Included

• 1x Neptune Systems PM2 Salinity Module
• AquaBus cable
• Mounting screws and installation guide
(Conductivity and temp probes sold separately)

🛠️ How to Use

1. Connect the PM2 to your APEX system via the AquaBus cable

2. Plug in a compatible conductivity probe (sold separately)

3. Add a second temperature probe for full compensation (optional)

4. Calibrate with 53,000 µS solution

5. Monitor and set alerts in APEX Fusion for salinity changes

📐 Specifications

• Connectivity: AquaBus (via included cable)
• Probe Ports: 1x conductivity, 1x temperature
• Compatibility: All Neptune APEX systems
• Application: Salinity monitoring in saltwater and reef aquariums
• Dimensions: Approx. 2.5" x 2.5" x 1"

✅ Conclusion

The Neptune Systems PM2 Module is a must-have for reef keepers who demand stable salinity levels. With seamless APEX integration and high-precision conductivity monitoring, it’s the smart choice for maintaining water chemistry balance in your marine aquarium.