Controllers & Monitors

Controllers & Monitors

We carry a wide range of aquarium controllers & monitors from American Marine, BioTek Marine, Hanna Instruments, Apogee Instruments, Neptune Systems, Tunze, Hydros & more. If you need help selecting the right product for your budget and needs then please call or email us.

First Time Customers Use Coupon Code: WELCOMEExtra 10% With Account Checkout to Save 10%
15% Off Hanna Instruments & 20% Off ATI Straton LED Lights.

Items 181-216 of 311

Set Descending Direction
  1. HYDROS IceCap Gyre WaveEngine Pump Adapter

    $11.99
    Temporarily Out Of Stock
  2. HYDROS Tunze 0-10V WaveEngine Adapter

    $14.99
    Order by 3:30pm EST for Same Day Shipping (M-F)
  3. HYDROS WaveEngine APX Link

    $12.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  4. HYDROS WaveEngine 0-10V Quad Cable

    $12.99
    Ships in 1-2 Days
  5. Apogee SQ-420X Smart Quantum Sensor - USB Output

    $234.00
    Usually Ships in 1 - 2 Business Days After Submission of Order
  6. Apogee PQ-510 Package: microCache and Full-spectrum Quantum

    $599.00
    Usually Ships in 1 - 2 Business Days After Submission of Order
  7. HYDROS CONTROL X4 STARTER PACK

    $449.99
    Order by 3:30pm EST for Same Day Shipping (M-F)
  8. HYDROS CONTROL 2 (Controller Only)

    $159.99
    Ships in 1-2 Days
  9. HYDROS Control X2 Starter Pack

    $199.99
    This product will be back ordered
  10. HYDROS CONTROL 4 (Controller Only)

    $349.99
    Order by 3:30pm EST for Same Day Shipping (M-F)
  11. AutoAqua Smart Temp Security

    $59.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  12. AutoAqua Smart Level Security

    $59.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  13. Neptune Systems Apex TRIDENT (Alk, Cal, Mag) Monitoring Device

    Rating:
    93%
    $674.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  14. Neptune Systems Apex Controller Base Unit

    $399.95
    Call For Availability
  15. Focustronic Alkalinity Controller

    Rating:
    73%
    Special Price $841.49 Regular Price $989.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  16. Apogee MQ-210X Underwater Quantum Meter

    $373.00
    This product will be back ordered
  17. Apogee MQ-210X (OPEN BOX) Underwater Quantum Meter

    $320.00
    Out of stock
  18. Alkatronic Concentrated Reagent 1L

    Special Price $16.99 Regular Price $19.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  19. Alkatronic Concentrated Reagent 4L

    Special Price $93.50 Regular Price $110.00
    Usually Ships in 1 - 2 Business Days After Submission of Order
  20. Neptune Systems DOS/DDR Combo Pack

    $479.95
    Usually Ships in 1 - 2 Business Days After Submission of Order
  21. Neptune Systems 1LINK Extension Cable

    $23.99
    Order by 3:30pm EST for Same Day Shipping (M-F)
  22. Neptune Systems ATK Automatic V2 Top-Off Kit

    $239.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  23. Neptune Systems Apex PMUP V2 Apex Version

    $47.99
    This product will be back ordered
  24. Neptune Systems Apex PMUP-T V2 w/ Transformer

    $62.99
    This product will be back ordered
  25. NEPTUNE SYSTEMS DC24 EXTENSION CABLE

    $19.95
    This product will be back ordered
  26. HYDROS Maxspect Gyre XF330/350 WaveEngine Pump Adapter

    $11.99
    Ships in 1-2 Days
  27. Reef Octopus Protein Skimmer Auto Time Delay

    $51.96
    Ships in 1-2 Days
  28. Tunze Turbelle Controller 7090.000

    $62.79
    Out Of Stock
  29. Neptune Systems Energy Bar 832

    $289.95
    Usually Ships in 1 - 2 Business Days After Submission of Order
  30. Neptune Systems 1Link Flow Control Module

    $169.99
    This product will be back ordered
  31. Neptune Systems Double Junction Lab Grade pH Probe

    Rating:
    100%
    $94.99
    This product will be back ordered
  32. Neptune Systems Double Junction Lab Grade ORP Probe

    $104.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
  33. Vertex Cerebra 6 Outlet Power Bar

    Special Price $70.00 Regular Price $179.99
    Order by 3:30pm EST for Same Day Shipping (M-F)
  34. Apogee SQ-520 Full Spectrum Smart Quantum Sensor

    $435.00
    Usually Ships in 1 - 2 Business Days After Submission of Order
  35. Neptune Systems Replacement Apex Display Module

    $115.99
    This product will be back ordered
  36. Milwaukee pH58 MAX Waterproof 3-in-1 pH/ORP/Temp Tester with Replaceable Probe

    $137.99
    Usually Ships in 1 - 2 Business Days After Submission of Order
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