Sensor

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    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

    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

    Photo sensor that will allow the Tunze 7090.050 controller which is now included with all Tunze Nanostream and Stream pumps to turn off at night when no light is available and then turn back on when your light is on.

    $33.67 $30.30

    …holder that can hold the light in multiple positions and orientations. The innovative design is fully waterproof and is perfect for refugiums, soft coral, and freshwater aquariums. 6500K Color Temp Magnet Mounting System Temperature Sensor Aluminum Heat Sink Completely Waterproof Absolutely Silent

    $69.56 $62.60

    …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 and much more.  Compatible with FMM Weighted…

    $29.95

    Perfect for dosing with the Kamoer X4 WiFi Dosing System Dimensions - 9.25" L x 2.375" W x 8.5" H Labeled for Alkalinity Solutions 2 Liter Volume Slim Space Saving Design Includes Level Sensor  Includes Intake Tube

    $14.99

    Vertex Cerebra Float Level Sensor is great for ATO systems, reservoirs, and many other applications. These float level sensors will directly connect to the Vertex Cerebra Controller's Multibar. Mini-DIN connector Reversible polarity Includes mounting nut Includes mounting gasket

    $19.99 $17.99

    …many other household applications! The Latching solenoid automatically shuts off the flow of water and also makes a loud beeping noise when the sensor detects moisture 3/8" FNPT (ID) Threads or 1/2" BSP Threads (OD) Can be adapted to push-connect fittings Handles up to 5 GPM Low battery alert…

    $53.00

    The Apogee Sensor Wand is fully submersible, allowing a PAR meter's sensor to be securely attached to the end of the wand. The wand lets you keep your hands dry while allowing you to get the sensor in hard to reach places your hands or make-shift holder can access. Sensor Wand Length - 40 inch MAX…

    $59.99

    The FMM (Fluid Monitoring Module) is a multi-purpose module that, with the help of various accessories, enables your Apex to do: Flow Monitoring Leak Detection Water Level Detection Power 24VDC accessories Future sensors

    $99.95

    …display, reactors, refugiums or anything else that you is plumbed into your system.  The Flow Monitoring Kit (FMK) will unlock a world of control for any apex model! Flow Monitoring Kit Includes: FMM Module 1" FS-100 Flow Sensor 1/2" FS-50 Flow Sensor (Two Included) Two 1" Unions Four 1/2" Adapters

    $199.95

    …detection to your Neptune Apex Controller Neptune's LDK (Leak Detection Kit) includes everything you will need to add leak sensors to your Apex Controller within minutes. Includes two leak sensors Compatible with all Apex models Powered through Aquabus connection Add up to four total leak sensors

    $149.95

    …your return pump and also helps your protein skimmer filter more efficiently by keeping a steady water level in the sump box. Accepts the Modular Return Pump Basket Filter Creates a steady water level for the protein skimmer Perfect spot for ATO sensors Titanium clamping Screws Crystal clear acrylic

    $49.99

    …features four switch ports and one relay port to provide a broad range of monitoring options for your ReefKeeper Elite or Lite. Use this module to add float switches, reed switches, leak detectors, on/auto/off override switches, optical sensors, and more... Physical dimensions: 1.0″ x 2.25″ x 4.30″

    $69.99 $62.99

    Build Your Own Auto Top Off System for your aquarium. Perfect for the DIY reefer who likes fun projects and wants to save a few dollars. Assembly requires only basic tools and no soldering. Basic knowledge of electrical wiring required.

    $39.95

    …Performs continuous light-level monitoring for your aquarium Measures actual PAR – the light corals and plants use Prevents burning out corals Includes ASM – the new Advanced Sensors Module PAR sensor hides nicely in aquarium inside Real Reef Rock Fine tune your lighting to your aquariums needs

    $299.95

    …and sensor in one unit to keep you water at a safe level while maintaining proper salinity. Powerful magnets hold the unit in place at the desired water level in your tank or sump. Music alarm sounds if unit detaches from tank or if pump runs for too long. Patent-pending contactless optical sensor -…

    $159.99 $144.99

    Perfect for dosing with the Kamoer X4 WiFi Dosing System Dimensions - 9.25" L x 2.375" W x 8.5" H Labeled for Magnesium Solutions 2 Liter Volume Slim Space Saving Design Includes Level Sensor  Includes Intake Tube

    $14.99

    …safeguard your home from water damage. The Watchdog Water on Floor Sensor will report a super loud audible tone to alert you in the event of a leak. The unit comes with a 60" lead to mount the extremely sensitive conductivity sensor securely wherever you may need it. Features: 110dB High Frequency…

    $12.99

    Perfect for dosing with the Kamoer X4 WiFi Dosing System Dimensions - 9.25" L x 2.375" W x 8.5" H Labeled for Calcium Solutions 2 Liter Volume Slim Space Saving Design Includes Level Sensor  Includes Intake Tube

    $14.99

    Somatic by Vertex The 60 Sensor Holder was designed to hold your aquariums probes or sensors in the perfect spot with the Somatic Filtration Systems. Holds up to 4 sensors or tubes Titanium Screws Secure mounts Crystal Clear Acrylic

    $26.99

    Know Your Flow! 2" Flow Sensor for the Fluid Metering Module from Neptune.  The FS-200 will work with flow rates from 300-3000 gph, and will connect to any standard 2" Slip PVC.

    $99.95

    Know Your Flow! 1" Flow Sensor for the Fluid Metering Module from Neptune.  The FS-100 will work with flow rates from 150-1500 gph, and will connect to any standard 1" Slip PVC.

    $59.95

    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

    Know Your Flow! 1/4" Flow Sensor for the Fluid Metering Module from Neptune.  The FS-25 will work with flow rates from 3-12 gph, and will connect to any standard 1/4" push connect tubing.

    $19.95

    Secure your Seneye on tanks up to 3/8" thick! The Seneye Mag Holder will hold your Seneye sensor right where you want it with their magnetic mounting system. Strong magnets 100% reef safe Enables water level alarm

    $49.99

    Secure your Seneye on tanks or sumps up to 5/8" thick! The Seneye Mag Holder will hold your Seneye sensor right where you want it with their magnetic mounting system. Strong magnets 100% reef safe Enables water level alarm

    $59.99

    Vertex Cerebra Optical Level Sensors are great as the main form of level control or backup. Using optical sensors in conjunction with standard float switches allow for multiple technologies to be employed creating a virtually fail proof system. Super sensitive Easy to clean Less than 1/8" trigger…

    $39.99 $35.99

    …Measurements! The Smart Quantum SQ-520 PAR Sensor is a USB powered sensor that will hook up to any PC or MAC allowing you to use your personal computer instead of an expensive dedicated monitor with the included 15 foot long USB cable. Hooking a sensor up directly to your computer allows you to…

    $345.00

    …of your reef tank to ensure the healthy growth of your inhabitants. Handheld meter with large, easy to read LCD display Records reading for review Record measurement in Automatic mode or Manually Separate sensor head is fully potted, dome-shaped design - waterproof, weatherproof and self-cleaning

    $379.99

    Hold your standard probes in style. Vertex Sensor-Mount is an acrylic probe holder which hangs on the edge of your reef tank 3 Standard size holes

    $11.99