Neptune Systems Dissolved Oxygen Probe

Double junction probes place a second vessel inside the main electrolyte with a second internal junction. The means that even when the aquarium water eventually begins to make its way in the first compartment, it still has to go through the second junction to contaminate the electrolyte surrounding the reference electrode.

• - Flow-sensor 1/2 inch
• - Suitable for pipe diameters of 20mm
• - Compatible with FMM Module
• - Works with flow rates from 115-950 l/h
• - Does not come with PVC connectors

Long-life Temperature Probe - replace your Temperature Probe, add one for another tank, or put one on your PM2/PM3 module for temperature compensated readings.

Be notified if there is ever a leak before it turns into a disaster. Connecting the LD-1 Leak Detector to the FMM module will allow your Apex Controller to notify you if water ever touches the sensor. There are many applications for leak detectors from water on floor warnings, skimmer cup overflows and much more.

• - Flow-sensor 1/4"
• - Suitable for tubes of 4mm
• - Used with FMM Module
• - Internal diameter: 7mm

• - Flow-sensor 1" 
• - Suitable for pipe diameters 25mm and 32mm
• - Used with a return pump
• - Compatible with FMM Module
• - Does not come with PVC connectors

The Neptune LLS is a first of its kind industry exclusive! While most liquid level sensors simply measure the presence or absence of liquid at a predetermined  sensor height, the LLS is one continuous vertical sensor that can identify the exact depth of a liquid in both inches and centimeters at any given time. This increased sensitivity in measurement can help you identify and be alerted of changes in evaporation, consumption, and dosing levels within sumps, ATO reservoirs, AIO tanks, dosing containers, mixing stations, and more.

• - Flow-sensor 2"
• - Suitable for pipe diameters 32mm, 40mm and 50mm
• - Used with a return pump
  - Does not come with PVC connectors