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Apex Probes

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  • Double Junction Lab Grade pH Probe - Neptune Systems

    Double Junction Lab Grade pH Probe - Neptune Systems

    Neptune Systems

    $94.99
    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...
  • Double Junction Lab Grade ORP Probe - Neptune Systems

    Double Junction Lab Grade ORP Probe - Neptune Systems

    Neptune Systems

    $104.99
    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...
  • 23" Liquid Level Sensor (LLS-23) - Neptune Systems

    23" Liquid Level Sensor (LLS-23) - Neptune Systems

    Neptune Systems

    $84.99
    The 23″ sensor is a bit larger version of the 15″ sensor and can be utilized in similar applications to the 15″ but for larger sized-aquariums.   A great application to consider is utilizing these advancing a roller mat...
  • 35" Liquid Level Sensor (LLS-35) - Neptune Systems

    35" Liquid Level Sensor (LLS-35) - Neptune Systems

    Neptune Systems

    $109.99
    The largest of the LLS sensors is the 35″ sensor.  This sensor is to be used for large reservoirs that are often utilized for saltwater reservoirs for manual and automatic water changes.   Never before offered in the aquarium industry...