Probes & Controller Accessories

Aquarium controllers have seemingly endless probes and add-ons to help you achieve your reefing goals. Here you'll find everything from replacement probes, maintenance items, accessories, and controller add-ons for the most popular brands like Apex, GHL, and Hydros.
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76 Items

  1. Probe Calibration Kit - ph 7.0, ph 10.0, & Salinity 53000uS
    Neptune Systems
    Probe Calibration Kit - ph 7.0, ph 10.0, & Salinity 53000uS
    $5.99 $5.99

  2. Lab Grade Double Junction pH Probe
    Neptune Systems
    Lab Grade Double Junction pH Probe
    $94.99 $94.99

  3. Lab Grade Double Junction ORP Probe
    Neptune Systems
    Lab Grade Double Junction ORP Probe
    $104.99 $104.99

  4. Lab Grade Conductivity/Salinity Probe
    Neptune Systems
    Lab Grade Conductivity/Salinity Probe
    $209.99 $209.99

  5. Temperature Probe
    Neptune Systems
    Temperature Probe
    $34.99 $34.99

  6. Apex Controller Toggle Box
    Adaptive Reef
    Apex Controller Toggle Box
    $134.99 $134.99

  7. 7.00 pH Calibration Fluid
    Neptune Systems
    7.00 pH Calibration Fluid
    $1.99 $1.99

  8. 10.00 pH Calibration Fluid
    Neptune Systems
    10.00 pH Calibration Fluid
    $1.99 $1.99

  9. Neptune Systems Conductivity Calibration Solution - 53000 Microsiemens
    Neptune Systems
    Neptune Systems Conductivity Calibration Solution - 53000 Microsiemens
    $2.99 $2.99

  10. MPR Magnetic Probe Rack
    Neptune Systems
    MPR Magnetic Probe Rack
    $44.95 $44.95

  11. CustomCradle Pro Tube Holder
    Innovative Marine
    CustomCradle Pro Tube Holder
    $36.00 $36.00

  12. CustomCradle Pro Probe Holder
    Innovative Marine
    CustomCradle Pro Probe Holder
    $36.00 $36.00

  13. LD-3 Optical Multi-Surface Leak Sensor
    Neptune Systems
    LD-3 Optical Multi-Surface Leak Sensor
    $42.99 $42.99

  14. MOS Magnetic Optical Sensor
    Neptune Systems
    MOS Magnetic Optical Sensor
    $41.99 $41.99

  15. OS-1 Optical Level Sensor V2
    Neptune Systems
    OS-1 Optical Level Sensor V2
    $29.99 $29.99

  16. LD-2 Solid Surface Leak Detection Probe
    Neptune Systems
    LD-2 Solid Surface Leak Detection Probe
    $34.99 $34.99

  17. LD-1 Low Profile Leak Detection Probe
    Neptune Systems
    LD-1 Low Profile Leak Detection Probe
    $34.99 $34.99

  18. Replacement Dissolved Oxygen Probe Membrane Kit
    Neptune Systems
    Replacement Dissolved Oxygen Probe Membrane Kit
    $79.99 $79.99

  19. Low-Profile Advanced Leak Detection Probe
    Neptune Systems
    Low-Profile Advanced Leak Detection Probe
    $31.99 $31.99

  20. Solid Surface Advanced Leak Detection Probe
    Neptune Systems
    Solid Surface Advanced Leak Detection Probe
    $31.99 $31.99

  21. Lab Grade Dissolved Oxygen Probe
    Neptune Systems
    Lab Grade Dissolved Oxygen Probe
    $789.99 $789.99