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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78 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
    $9.99 $9.99

  2. PINPOINT pH Replacement Probe Inc.
    American Marine
    PINPOINT pH Replacement Probe Inc.
    $49.99 $49.99

  3. Lab Grade Double Junction ORP Probe
    Neptune Systems
    Lab Grade Double Junction ORP Probe
    $129.99 $129.99

  4. Lab Grade Conductivity/Salinity Probe
    Neptune Systems
    Lab Grade Conductivity/Salinity Probe
    $249.99 $249.99

  5. Salinity Probe Stability Kit (SPS)
    Vivid Creative Aquatics
    Salinity Probe Stability Kit (SPS)
    $27.95 $27.95

  6. Temperature Probe
    Neptune Systems
    Temperature Probe
    $49.99 $49.99

  7. HI98509 Checktemp 1 Digital Thermometer
    Hanna Instruments
    HI98509 Checktemp 1 Digital Thermometer
    $62.99 $62.99

  8. 25-Pack HI70024P 35ppt Salinity Calibration Sachet
    Hanna Instruments
    25-Pack HI70024P 35ppt Salinity Calibration Sachet
    $39.99 $39.99

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  9. Audible & Visual Apex Alarm
    Adaptive Reef
    Audible & Visual Apex Alarm
    $109.99 $109.99

  10. MPR Magnetic Probe Rack
    Neptune Systems
    MPR Magnetic Probe Rack
    $59.99 $59.99

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

  12. PR-1 Probe Holder
    AquaReady
    PR-1 Probe Holder
    $29.99 $29.99

  13. MPO Duo - Magnetic Probe Organizer
    AvidAqua
    MPO Duo - Magnetic Probe Organizer
    $39.95 $39.95

  14. MPO Quatro - Magnetic Probe Organizer
    AvidAqua
    MPO Quatro - Magnetic Probe Organizer
    $44.95 $44.95

  15. MTO - Magnetic Tubing Organizer
    AvidAqua
    MTO - Magnetic Tubing Organizer
    $44.95 $44.95

  16. Probes Multi holder
    Reef Factory
    Probes Multi holder
    $29.99 $29.99

  17. LD-3 Optical Multi-Surface Leak Sensor
    Neptune Systems
    LD-3 Optical Multi-Surface Leak Sensor
    $59.99 $59.99

  18. MOS Magnetic Optical Sensor
    Neptune Systems
    MOS Magnetic Optical Sensor
    $59.99 $59.99

  19. OS-1 Optical Level Sensor V2
    Neptune Systems
    OS-1 Optical Level Sensor V2
    $39.99 $39.99

  20. LD-2 Solid Surface Leak Detection Probe
    Neptune Systems
    LD-2 Solid Surface Leak Detection Probe
    $49.99 $49.99

  21. LD-1 Low Profile Leak Detection Probe
    Neptune Systems
    LD-1 Low Profile Leak Detection Probe
    $49.99 $49.99

  22. Low-Profile Advanced Leak Detection Probe
    Neptune Systems
    Low-Profile Advanced Leak Detection Probe
    $39.99 $39.99

  23. Solid Surface Advanced Leak Detection Probe
    Neptune Systems
    Solid Surface Advanced Leak Detection Probe
    $39.99 $39.99

  24. Float Switch - Vertical Mount
    Bulk Reef Supply
    Float Switch - Vertical Mount
    $10.99 $10.99

  25. Float Switch - Horizontal Mount
    Bulk Reef Supply
    Float Switch - Horizontal Mount
    $15.99 $15.99

  26. Sample Water Filter Pod (SWF-POD)
    Vivid Creative Aquatics
    Sample Water Filter Pod (SWF-POD)
    $22.95 $22.95

  27. SWF-POD Accessory Pack
    Vivid Creative Aquatics
    SWF-POD Accessory Pack
    $9.95 $9.95

  28. MXM Mobius Wireless Control Module
    Neptune Systems
    MXM Mobius Wireless Control Module
    $139.99 $139.99

  29. 7.00 pH Calibration Fluid
    Neptune Systems
    7.00 pH Calibration Fluid
    $4.99 $4.99

  30. 10.00 pH Calibration Fluid
    Neptune Systems
    10.00 pH Calibration Fluid
    $4.99 $4.99