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Aperture Business New Website Reminder

We are now transitioning all ordering of Neptune Systems, EcoTech Marine, AquaIllumination, Bulk Reef Supply Wholesale, and all of our Aperture Exclusive Distribution Brands to the new Aperture Business website (aperturebusiness.com).

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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. Double Junction Lab Grade pH Probe
    15 Reviews
    Bulk Reef Supply
    Double Junction Lab Grade pH Probe
    $69.99 $69.99

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

  3. Double Junction Lab Grade ORP Probe
    Bulk Reef Supply
    Double Junction Lab Grade ORP Probe
    $79.99 $79.99

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

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

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

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

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

    Add to Cart
  9. Smart Stir - Magnetic Stirrer for Test Kits
    31 Reviews
    AutoAqua
    Smart Stir - Magnetic Stirrer for Test Kits
    $32.99 $32.99

  10. Standard Aquarium Controller Board
    5 Reviews
    Adaptive Reef
    Standard Aquarium Controller Board
    From: $123.19

    Choose Options Notify Me When In-Stock
  11. MXM Mobius Wireless Control Module
    19 Reviews
    Neptune Systems
    MXM Mobius Wireless Control Module
    $119.95 $119.95

  12. Dual Light Status Indicator for Apex Controller
    Adaptive Reef
    Dual Light Status Indicator for Apex Controller
    $69.99 $99.99

  13. In-Line Probe Holder Manifold
    4 Reviews
    Adaptive Reef
    In-Line Probe Holder Manifold
    $131.99 $131.99

  14. 7.00 pH Calibration Fluid
    Neptune Systems
    7.00 pH Calibration Fluid
    $1.99 $1.99

  15. 10.00 pH Calibration Fluid
    1 Review
    Neptune Systems
    10.00 pH Calibration Fluid
    $1.99 $1.99

  16. Neptune Systems Conductivity Calibration Solution - 53000 Microsiemens
    7 Reviews
    Neptune Systems
    Neptune Systems Conductivity Calibration Solution - 53000 Microsiemens
    $2.99 $2.99

  17. Milwaukee pH Calibration Fluid - Single Use Packet
    36 Reviews
    Milwaukee Instruments
    Milwaukee pH Calibration Fluid - Single Use Packet
    From: $1.54

    Choose Options Notify Me When In-Stock
  18. 10.01 Calibration Solution Box of 25 - Milwaukee
    Milwaukee Instruments
    10.01 Calibration Solution Box of 25 - Milwaukee
    $22.99 $22.99

    Add to Cart
  19. Watchdog Leak Detection Alarm
    7 Reviews
    Glentronics
    Watchdog Leak Detection Alarm
    $12.79 $15.99

  20. Refractometer Calibration Solution
    13 Reviews
    Bulk Reef Supply
    Refractometer Calibration Solution
    $7.99 $7.99

  21. MPR Magnetic Probe Rack
    79 Reviews
    Neptune Systems
    MPR Magnetic Probe Rack
    $44.95 $44.95

  22. CustomCradle Pro Tube Holder
    Innovative Marine
    CustomCradle Pro Tube Holder
    $23.99 $29.99

  23. CustomCradle Pro Probe Holder
    Innovative Marine
    CustomCradle Pro Probe Holder
    $23.99 $29.99

  24. LLS Liquid Level Sensor
    29 Reviews
    Neptune Systems
    LLS Liquid Level Sensor
    From: $47.99

    Choose Options Notify Me When In-Stock
  25. OS-1 Optical Level Sensor V2
    19 Reviews
    Neptune Systems
    OS-1 Optical Level Sensor V2
    $29.99 $29.99

  26. LD-2 Solid Surface Leak Detection Probe
    1 Review
    Neptune Systems
    LD-2 Solid Surface Leak Detection Probe
    $34.99 $34.99

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

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

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

  30. Universal Probe & Water Line Holder (4 Probes, 3 AWC Lines)
    1 Review
    Slide-Loc
    Universal Probe & Water Line Holder (4 Probes, 3 AWC Lines)
    $39.98 $39.98

  31. Universal Probe & Water Line Holder (2 Probes, 2 AWC Lines)
    Slide-Loc
    Universal Probe & Water Line Holder (2 Probes, 2 AWC Lines)
    $39.98 $39.98

  32. Universal Dosing Tube Holder (6-12 Lines)
    1 Review
    Slide-Loc
    Universal Dosing Tube Holder (6-12 Lines)
    $39.98 $39.98

  33. PINPOINT pH Replacement Probe
    17 Reviews
    American Marine Inc.
    PINPOINT pH Replacement Probe
    $49.99 $49.99

  34. PH-200 Waterproof pH Meter
    1 Review
    HM Digital
    PH-200 Waterproof pH Meter
    $63.99 $79.99

  35. Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    2 Reviews
    Hanna Instruments
    Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    $209.99 $209.99

  36. Lab Grade Dissolved Oxygen Probe
    3 Reviews
    Neptune Systems
    Lab Grade Dissolved Oxygen Probe
    $789.99 $789.99

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

  38. Float Switch - Horizontal Mount
    5 Reviews
    Bulk Reef Supply
    Float Switch - Horizontal Mount
    $15.99 $15.99

  39. Powertronic Smart Power Bar
    Focustronic
    Powertronic Smart Power Bar
    $93.50 $110.00

  40. Alkatronic Reagent (4L)
    Focustronic
    Alkatronic Reagent (4L)
    $110.00 $110.00