Probe

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    …with probe holders you can have the water that is going to feed your tank run through probes right before it enters the tank. The probe holder fitting it will screw directly into 1/2" Female NPT threads for a leak-free connection. Note: Neptune Apex temperature probes will not work with the probe

    $19.99

    …directly up to any Apex Controller and with the Neptune Leak Detection probes can alert you of any possible leak that may be occurring by strategically placing the probes around the stand, sump, and tank. Hard surface probe to be used in conjunction with the Advanced Leak Detection Module: ALD from…

    $29.95

    High quality, Economical, American-made pH probe to meet your saltwater aquarium needs. Made in the US under strict quality control BNC connector with superior insulators Cable has low noise design with conductive copper layer between braid and center conductor Less frequent and quicker calibration…

    $34.99

    High quality, American-made ORP probe to meet your saltwater aquarium needs. Made in the US under strict quality control High-grade platinum rod Double junction designed specifically for contact with proteins or heavy metals Longer lifespan than single junction BNC connector with superior insulators…

    $69.99

    Store your pH and ORP probes in these convenient bottles - protects the probe during storage. Use with pH/ORP Probe Storage Solution

    $4.99

    Salinity / Conductivity Probe – Lab Grade Start measuring salinity in your tank and get alerts when it is out of range. Replace an old probe Add salinity monitoring to your system via the Salinity Module: PM2   *Calibration solutions sold separately

    $124.95

    …thermometer we use to calibrate our temperature probes, heaters and any other device that requires calibration. We will usually double check calibration with the VWR Thermometer about once a month, and you may be surprised what you find with your probes or heaters calibration over time. Fully…

    $64.99

    …controller lets you connect and sync all of your accessories together through a single controller giving you maximum control through individual channels. Includes Temp Probe Tunze Light Control Tunze Pump Control Heater Control pH Control CO2 Control Compatible with Tunze Safety Connector 6105.500  

    $354.75

    High quality, American-made pH probe to meet your saltwater aquarium needs. Made in the US under strict quality control Double junction designed specifically for contact with proteins or heavy metals BNC connector with superior insulators Cable has low noise design with conductive copper layer…

    $59.99

    High quality, Economical, American-made ORP probe to meet your saltwater monitoring. Made in the US under strict quality control BNC connector with superior insulators Cable has low noise design with conductive copper layer between braid and center conductor Less frequent and quicker calibration 10…

    $49.99 $39.99

    Optical sensors are the go to sensor if you want a reliable sensor over a long period. The Neptune Optical Sensor plugs directly into the FMM allowing you to monitor the level of your sump, mixing station, or any other reservoir with liquid in it.

    $24.95

    Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more.

    $79.99

    …and Air Dryer Easy to use and budget-friendly. Easy to read back-lit digital display. Utilizes the digital continuous sampling and control technology to control the ORP value more exactly and reliably. Designed for use in a humid environment. No regular maintenance required. Probe Sold Separately.

    $189.99

    The PINPOINT pH Replacement Probe was designed specifically with aquariums in mind. It features long continuous duty life expectancy, fast response and is non-toxic to aquarium systems.   *Calibration solutions sold separately

    $39.99

    …is a bit OCD over your equipment and how it looks, this is the sump for you. From cable management from the return pump power cord to the delicate probe and float switch cables they are all neatly arranged to keep your eyes on the equipment and not a birds nest of cables that is all too common in…

    $2,349.99

    Neptune Double Junction probes will out last most other traditional lab grade probes letting you go longer between calibrations, and having to purchase and replace probes less frequently. The Double Junction isolates the reference gel and probe from proteins and other organics that may otherwise…

    $74.95

    Be notified if there is ever a leak before it turns into a disaster. Connecting the LD-2 Leak Detector to the FMM module will allow your Apex Controller to notify you if water ever touches the sensor. There are many applications for leak detectors from water on floor warnings, skimmer cup overflows…

    $29.95

    Neptune Systems designed the MPR - Magnetic Probe Rack specifically for the Apex. It will hold the larger diameter temperature probe, pH probe, ORP probe, and salinity probe. Made from acrylic and with strong neodymium magnets Works securely on sumps and aquariums up to 1/2" thick

    $39.95

    …CustomCradle probe holders are clutter free and one of the easiest probe holders to use, and maintain. Thumb screws are a thing of the past with the magnetically coupled, padded probe and dosing tube holder. A single CustomCradle can hold probes, top off tubing, and dosing tubing all in one probe

    $29.99

    Easily view the temperature of your tank with the Digi-Temp2. Large display shows temperature in Fahrenheit or Celsius. Compact design for discreet application. Temperature range is -58° F to 158° F (-50 C to 70 C). Accurate to +/- 1.5° F. 41” temperature probe cord for easy configuration.

    $10.99

    …testing and dosing information and much more Included WiFi lets you now connect to the internet even easier. With the Fusion Cloud interface, everything is easier from calibrating probes to customizing outlets. Fusion gives you the ability to monitor and control you Apex from anywhere in the world.

    $1,149.95

    …CustomCradle probe holders are clutter free and one of the easiest probe holders to use, and maintain. Thumb screws are a thing of the past with the magnetically coupled, padded probe and dosing tube holder. A single CustomCradle can hold probes, top off tubing, and dosing tubing all in one probe

    $49.99

    Long-life Temperature Probe - replace your Temperature Probe, add one for another tank, or put one on your PM2/PM3 module for temperature compensated readings.

    $29.95

    Add the pH/ORP Probe Expansion Module to your Apex Neptune System. Module has extra Temp Probe port I/O Switch Inputs for ATO, feed buttons, leak alarms, etc. Monitor multiple tanks Galvanic Isolation for accurate and reliable probe readings

    $84.95

    …is a bit OCD over your equipment and how it looks, this is the sump for you. From cable management from the return pump power cord to the delicate probe and float switch cables they are all neatly arranged to keep your eyes on the equipment and not a birds nest of cables that is all too common in…

    $2,499.99

    Optical sensors are the go-to sensor if you want a reliability over a long period of time. The Neptune Optical Sensor plugs directly into the FMM allowing you to monitor the level of your sump, mixing station, or any other reservoir that has up to 1/4" thick walls. Includes Magnetic Mount Neptune…

    $34.95

    Lab Grade Dissolved Oxygen Probe for Neptune PM3 Module. The price of the probe isn't all that cheap compared to the traditional probes we use in this hobby, but this probe can easily last you a life time because the actual sensing membrane is replaceable. About every 3 months you will need to…

    $699.95

    …your pH probe or pen. Many pH probes will start to loose their calibration in as short as a month or two depending on your probe. We suggest calibrating probes every 30-60 days for the most reliable readings. Available in: 4.01 pH 7.01 pH 10.01 pH   Compatible with all pH meters and probes.

    Starting at:
    $1.09

    Know Your Flow! 1/2" Flow Sensor for the Fluid Metering Module from Neptune.  The FS-50 will work with flow rates from 30-250 gph, and will connect to any standard 1/2" Slip PVC.

    $29.95

    Have you ever bumped a dosing or top off tube just to find a puddle of water on the floor a day or so later? The Smart ATO universal tube holder can solve that issue by securely mounting your top off or dosing tubing edge of your rimless or rimmed aquarium.

    $12.99

    Each, highly accurate, packet of PINPOINT pH Calibration Fluid contains ample fluid for calibration (about 30mL). Keeping your probes calibrated will lead to more reliable readings allowing you to know exactly what is going on with your pH. PINPOINT pH 4.00 is accurate to +/- .002. PINPOINT pH 7.00…

    Starting at:
    $0.99