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

  6. Temperature Probe
    Neptune Systems
    Temperature Probe
    $34.99 $34.99

  7. HI98509 Checktemp 1 Digital Thermometer
    Hanna Instruments
    HI98509 Checktemp 1 Digital Thermometer
    $59.99 $59.99

  8. 25-Pack HI70024P 35ppt Salinity Calibration Sachet
    Hanna Instruments
    25-Pack HI70024P 35ppt Salinity Calibration Sachet
    $27.00 $27.00

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  9. Smart Stir - Magnetic Stirrer for Test Kits
    AutoAqua
    Smart Stir - Magnetic Stirrer for Test Kits
    $32.99 $32.99

  10. MXM Mobius Wireless Control Module
    Neptune Systems
    MXM Mobius Wireless Control Module
    $119.95 $119.95

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

  12. 7.00 pH Calibration Fluid
    Neptune Systems
    7.00 pH Calibration Fluid
    $1.99 $1.99

  13. 10.00 pH Calibration Fluid
    Neptune Systems
    10.00 pH Calibration Fluid
    $1.99 $1.99

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

  15. 4.01 Calibration Solution Box of 25 - Milwaukee
    Milwaukee Instruments
    4.01 Calibration Solution Box of 25 - Milwaukee
    $22.99 $22.99

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  16. Watchdog Leak Detection Alarm
    Glentronics
    Watchdog Leak Detection Alarm
    $15.99 $15.99

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  31. PH-200 Waterproof pH Meter
    HM Digital
    PH-200 Waterproof pH Meter
    $79.99 $79.99

  32. Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    Hanna Instruments
    Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    $209.99 $209.99

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