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Controllers & Monitors

Aquarium Supplies

Aquarium Controllers & Monitors

Aquarium controllers are a convenient way to keep an eye on the various water parameters in your aquarium. Monitors allow continuous readings of your aquarium’s pH, ORP, salinity and temperature. A controller is monitor, too, but it also includes an electrical outlet that can be used to turn on or off components.

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  1. American Marine Pinpoint Nitrate Monitor

    American Marine Pinpoint Nitrate Monitor

    American Marine is proud to introduce the PINPOINT™ Nitrate Monitor. The only truly affordable and accurate digital Nitrate measurement instrument engineered for marine saltwater. The PINPOINT™ Nitrate Monitor has been designed as...
    ONLY
    $269.96
  2. American Marine Pinpoint II Calcium Monitor

    American Marine Pinpoint II Calcium Monitor

    The PINPOINT II Calcium Monitor™ is the only truly affordable and accurate digital Calcium measurement instrument. Powered by a 9-volt battery (not included) or the Pinpoint AC Adapter Kit (not included). The PINPOINT II Calcium M...
    ON SALE
    $250.00
  3. American Marine Pinpoint Oxygen Monitor

    American Marine Pinpoint Oxygen Monitor

    American Marine PINPOINT II Oxygen Monitor PINPOINT II Oxygen Monitor™ will quickly and accurately display a digital readout for dissolved oxygen in either % oxygen or ppm saturation.  The measurement range is 00.0-20.0...
    ONLY
    $229.99
  4. Digital Aquatics Lifeguard Aquarium Monitor

    Digital Aquatics Lifeguard v2.0 Aquarium Monitor

    Not ready for a controller? Protect your tank with Lifeguard™ by Digital Aquatics.
    ONLY
    $219.98
  5. Neptune Systems Apex AquaController System with Standard Grade pH Probe

    Neptune Systems Apex AquaController System with Standard Grade pH Probe

    Neptune Systems AquaController Apex System w/ pH Probe Introducing the AquaController Apex. The professional equipment your reef deserves is now within reach. System Includes: 1 - Apex Base Unit 1 - Apex Display 1 - Energ...
    ONLY
    $524.95
  6. Neptune Systems Apex AquaController System with Lab Grade pH Probe

    Neptune Systems Apex AquaController System with Lab Grade pH Probe

    Neptune Systems AquaController Apex System w/ pH Probe Introducing the AquaController Apex. The professional equipment your reef deserves is now within reach. System Includes: 1 - Apex Base Unit 1 - Apex Display 1 - Energ...
    ONLY
    $549.95
  7. Neptune Systems Apex Gold AquaController System

    Neptune Systems Apex Gold AquaController System

    The Apex System is the best-value aquarium controller on the market today. Dollar for dollar you will not find a higher-quality controller that gives you more features, is easier to use, or has a larger and more active user base t...
    ONLY
    $799.93
  8. Digital Aquatics ReefKeeper Elite (Plus) Controller

    Digital Aquatics ReefKeeper Elite (Plus) Controller

    Digital Aquatics ReefKeeper Systems With systems starting under $150 ReefKeeper control systems can handle tanks from 10-10000 gallons! Flexibility, expandability, style and function make Digital Aquatics controller a great...
    ONLY
    $349.98
  9. Digital Aquatics ReefKeeper Elite (Net) Controller

    Digital Aquatics ReefKeeper Elite (Net) Controller

    Digital Aquatics Rk Elite (Complete System W/Net) The ReefKeeper Elite is true to its name, standing alone in the industry as the most innovative aquarium controller on the market. With the most intuitive interface and easy to ...
    ONLY
    $449.99
  10. Digital Aquatics ReefKeeper Lite (Plus) Controller

    Digital Aquatics ReefKeeper Lite (Plus) Controller

    Be First to Review

    ReefKeeper Lite Level 3 ReefKeeper Lite Preliminary Product Information Expandable - up to 4 modules (PC4s, SL1s or MLC) pH, ORP, and switch inputs (w/ optional SL1) 16 timers / 16 alarms Audible / Visual alarms ...
    ONLY
    $280.00

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