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Controllers & Testing

Tank maintenance can be made easier with the addition of monitors and controllers in your reef keeping arsenal. Bulk Reef Supply carries a variety of brands like Neptune Systems, Milwaukee, Digital Aquatics ReefKeeper, Pinpoint, HM Digital as well as our own line of BRS pH and ORP probes. Stability is the key to success in any reef aquarium. By using monitoring and controlling equipment, you ensure the most stable aquarium conditions for your tank inhabitants. By staying on top of the levels of your tank’s water parameters, you can ensure the health of your tank before a serious problem arises.

15% Off 1000s of items - St. Patrick's DaySale

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438 Items

  1. Salifert Nitrite Aquarium Test Kit
    3 Reviews
    Salifert
    Salifert Nitrite Aquarium Test Kit
    $10.08

    Earn 50 Reward Points Earn 100 Reward Points

    $11.86
  2. A3 Apex Jr Controller System
    5 Reviews
    Neptune Systems
    A3 Apex Jr Controller System
    $299.95

    Earn 299 Reward Points

    $299.95
  3. LLS Liquid Level Sensor
    11 Reviews
    Neptune Systems
    LLS Liquid Level Sensor

    Starting at: $44.95

    Earn 44 Reward Points

    Choose Options Notify Me When In-Stock
  4. MOS Magnetic Optical Sensor
    2 Reviews
    Neptune Systems
    MOS Magnetic Optical Sensor
    $39.95

    Earn 39 Reward Points

    $39.95
  5. Salifert Phosphate Aquarium Test Kit
    22 Reviews
    Salifert
    Salifert Phosphate Aquarium Test Kit
    $16.67

    Earn 80 Reward Points Earn 160 Reward Points

    $19.61
  6. DOS Dosing and Fluid Metering System
    66 Reviews
    Neptune Systems
    DOS Dosing and Fluid Metering System
    $329.95

    Earn 329 Reward Points

    $329.95
  7. Salifert Copper Aquarium Test Kit
    4 Reviews
    Salifert
    Salifert Copper Aquarium Test Kit
    $15.21

    Earn 75 Reward Points Earn 150 Reward Points

    $17.89
  8. Salifert Silicate Aquarium Test Kit
    7 Reviews
    Salifert
    Salifert Silicate Aquarium Test Kit
    $14.44

    Earn 70 Reward Points Earn 140 Reward Points

    $16.99
  9. PINPOINT pH Monitor
    20 Reviews
    American Marine Inc.
    PINPOINT pH Monitor
    $80.74

    Earn 80 Reward Points

    $94.99
  10. HIREEF2 Professional Reef Test Kit
    2 Reviews
    Hanna Instruments
    HIREEF2 Professional Reef Test Kit
    $292.00

    Earn 292 Reward Points

    $292.00
  11. PINPOINT pH Controller
    3 Reviews
    American Marine Inc.
    PINPOINT pH Controller
    $186.99

    Earn 186 Reward Points

    $219.99
  12. Phosphate Ultra Low Range PPM Colorimeter HI774 Hanna Checker - Marine Water
    26 Reviews
    Hanna Instruments
    Phosphate Ultra Low Range PPM Colorimeter HI774 Hanna Checker - Marine Water
    $63.95

    Earn 63 Reward Points

    $63.95
  13. Alkalinity DKH Colorimeter HI772 Hanna Checker - Marine Water
    106 Reviews
    Hanna Instruments
    Alkalinity DKH Colorimeter HI772 Hanna Checker - Marine Water
    $63.95

    Earn 63 Reward Points

    $63.95
  14. ProfiLux Mini WiFi - White
    1 Review
    GHL
    ProfiLux Mini WiFi - White
    $399.90

    Earn 399 Reward Points

    $399.90
  15. ProfiLux Mini WiFi - Black
    GHL
    ProfiLux Mini WiFi - Black
    $399.90

    Earn 399 Reward Points

    $399.90
  16. Apex Display Module
    14 Reviews
    Neptune Systems
    Apex Display Module
    $109.95

    Earn 109 Reward Points

    $109.95
  17. 12V Power Supply
    6 Reviews
    Neptune Systems
    12V Power Supply
    $15.95

    Earn 15 Reward Points

    $15.95
  18. PINPOINT pH Replacement Probe
    15 Reviews
    American Marine Inc.
    PINPOINT pH Replacement Probe
    $42.49

    Earn 42 Reward Points

    $49.99
  19. 1-Pack ICP-OES Testing Kit
    10 Reviews
    Triton
    1-Pack ICP-OES Testing Kit
    $49.00

    Earn 49 Reward Points

    $49.00
  20. 1-Pack N-DOC Organics Seawater Analysis
    1 Review
    Triton
    1-Pack N-DOC Organics Seawater Analysis
    $49.00

    Earn 49 Reward Points

    $49.00
  21. Refractometer for Reading Salinity with Calibration Fluid
    5 Reviews
    Bulk Reef Supply
    Refractometer for Reading Salinity with Calibration Fluid
    $31.44

    Earn 155 Reward Points Earn 310 Reward Points

    $36.99
    Add to Cart
  22. High Precision Hydrometer
    26 Reviews
    Tropic Marin
    High Precision Hydrometer
    $36.65

    Earn 36 Reward Points

    $36.65
  23. EB832 Energy Bar 832
    54 Reviews
    Neptune Systems
    EB832 Energy Bar 832
    $289.95

    Earn 289 Reward Points

    $289.95
  24. DOS & DDR Dosing System Package
    Neptune Systems
    DOS & DDR Dosing System Package
    $479.95

    Earn 479 Reward Points

    $479.95
    Add to Cart
  25. Hydros Control 2 Starter Pack - Aquarium Controller System
    4 Reviews
    Coralvue
    Hydros Control 2 Starter Pack - Aquarium Controller System
    $199.99

    Earn 199 Reward Points

    $199.99
  26. Hydros Control 4 Starter Pack - Aquarium Controller System
    30 Reviews
    Coralvue
    Hydros Control 4 Starter Pack - Aquarium Controller System
    $449.99

    Earn 449 Reward Points

    $449.99
  27. HYDROS Control XS Starter Kit - Coralvue
    3 Reviews
    Hydros
    HYDROS Control XS Starter Kit - Coralvue
    $199.99

    Earn 199 Reward Points

    $199.99
  28. MQ-510 Full Spectrum Underwater LED PAR Meter
    5 Reviews
    Apogee
    MQ-510 Full Spectrum Underwater LED PAR Meter
    $538.00

    Earn 538 Reward Points

    $538.00
  29. PINPOINT Probe Storage Fluid
    American Marine Inc.
    PINPOINT Probe Storage Fluid
    $8.75

    Earn 8 Reward Points

    $10.29
  30. PINPOINT ORP (Redox) 400 Calibration Fluid
    4 Reviews
    American Marine Inc.
    PINPOINT ORP (Redox) 400 Calibration Fluid
    $3.40

    Earn 3 Reward Points

    $4.00
  31. PINPOINT Salinity Calibration Fluid
    15 Reviews
    American Marine Inc.
    PINPOINT Salinity Calibration Fluid
    $9.17

    Earn 9 Reward Points

    $10.79
  32. Milwaukee MC120 pH Monitor
    4 Reviews
    Milwaukee Instruments
    Milwaukee MC120 pH Monitor
    $109.99

    Earn 545 Reward Points Earn 1,090 Reward Points

    $109.99
  33. Milwaukee MC122 pH Controller
    15 Reviews
    Milwaukee Instruments
    Milwaukee MC122 pH Controller
    $147.40

    Earn 735 Reward Points Earn 1,470 Reward Points

    $147.40
  34. Milwaukee MC510 ORP Controller
    3 Reviews
    Milwaukee Instruments
    Milwaukee MC510 ORP Controller
    $159.50

    Earn 795 Reward Points Earn 1,590 Reward Points

    $159.50
  35. MC125 pH/ORP Controller Combo
    1 Review
    Milwaukee Instruments
    MC125 pH/ORP Controller Combo
    $229.90

    Earn 1,145 Reward Points Earn 2,290 Reward Points

    $229.90
  36. Milwaukee pH600 pH Meter Pen
    22 Reviews
    Milwaukee Instruments
    Milwaukee pH600 pH Meter Pen
    $23.65

    Earn 115 Reward Points Earn 230 Reward Points

    $23.65
  37. FM-2: Filter Monitor with Volumizer
    27 Reviews
    HM Digital
    FM-2: Filter Monitor with Volumizer
    $33.99

    Earn 33 Reward Points

    $39.99
  38. PH-200 Waterproof pH Meter
    1 Review
    HM Digital
    PH-200 Waterproof pH Meter
    $67.99

    Earn 67 Reward Points

    $79.99
  39. MA887 Digital Seawater Refractometer - Milwaukee
    134 Reviews
    Milwaukee Instruments
    MA887 Digital Seawater Refractometer - Milwaukee
    $128.70

    Earn 640 Reward Points Earn 1,280 Reward Points

    $128.70
  40. Float Switch - Vertical Mount
    11 Reviews
    Bulk Reef Supply
    Float Switch - Vertical Mount
    $9.34

    Earn 45 Reward Points Earn 90 Reward Points

    $10.99