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    Sensors. The sensors can be placed in multiple areas around your tank and its equipment. Pairing an Apex Controller with the LDK lets you monitor and control your aquarium in the event of a leak or an overflow. With Neptune Fusion, you can easily set up alarms that will notify you if a sensor ever…

    $1,959.64 Regular Price: $
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    …turns into a disaster. Connecting the LD-1 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 Low Profile…

    $29.95 Regular Price: $

    …air pressure sensitive control box. As the fluid level rises in Davey's Locker it will trap air inside of the sensor tube and pressure will increase, activating the control box. The sensor pickup is very easy to clean and has absolutely no moving parts that can fail. 110V Control Relay (standard) -…

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    …audible alarm in the event water comes in contact with its sensor pads. It is extremely sensitive and we have found they even work with RODI water. The Watchdog monitor is small enough to slip between sumps and stands, or the wired sensor can be placed in even tighter locations. A single 9V battery…

    $12.99 Regular Price: $

    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 This sensor plugs…

    $34.95 Regular Price: $

    …Using a tiny optical sensor, AutoAqua's Smart Level Sensor will cut power to the outlet when the sensor detects a change in water level. The plug & play design requires no difficult programming and the magnetic attachmentmakes placement and adjustments of the level sensor quick and easy. The…

    $59.99 Regular Price: $

    …your older Tunze pump without an integrated controller to create wave simulation, while having a food timer and the ability to hook up a photo sensor to have the pump enter night mode automatically. Feed Mode Wave Simulation Oscillating Current Optional Night Mode Auto-Adjust Wave Timing Large…

    $53.29 Regular Price: $

    …Skimmer Security sensor and outlet. The easy to clean optical sensor will magnetically couple to any skimmer collection cup (up to 1/4" thick), and when the cup gets full it will shut down your skimmer pump keeping the skimmate in your cup and not your sump. Just mount the sensor inside of your cup…

    $59.99 Regular Price: $

    …tray, and that is where the optical eye sensor comes into play. Once the water level reaches the eye, the Klir will automatically activate the roller, exposing new fleece and allowing water to flow freely again, dropping the water level below the sensor. Specifications: Dimensions - 4.125" L x…

    $149.99 Regular Price: $199.99

    …carbon, GFO or any media of your choice. XPAquas proprietary dual-optical sensor packs two precise level sensors in one incredibly small package. In addition to keeping your water level constant, the two sensors also work in concert with the intelligent QST programming to help prevent overfilling.…

    $149.99 Regular Price: $

    …air pressure sensitive control box. As the fluid level rises in Davey's Locker it will trap air inside of the sensor tube and pressure will increase, activating the control box. The sensor pickup is very easy to clean and has absolutely no moving parts that can fail. 110V Control Relay (standard) -…

    $199.99 Regular Price: $
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    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. Usually used with a return pump, this flow sensor can be placed in line with the flow on any pipe, connected to…

    $19.95 Regular Price: $

    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. This sensor plugs into your FMM and, using reflected…

    $24.95 Regular Price: $

    …DI Resin Stage 3 -Pro Mixed Bed Cation DI Resin Triple TDS Meter Preinstalled Metering Locations Sensor 1 - Incoming water to DI stage Sensor 2 - After DI stage 2 and before DI stage 3* Sensor 3 - Final output from DI stage 3 Dimensions- 15.25" x 6.25" x 14" What's Included? 1x Triple Deionization…

    $125.99 Regular Price: $
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    …done in a matter of minutes and is very economical. After replacing the membrane the probe will function as if it were new. Includes 10ft cable. Sensor Membrane within the probe should be replaced every 3 months Dissolved oxygen can easily be manipulated with either air pumps and air stones, aiming…

    $699.95 Regular Price: $

    Sensors. The sensors can be placed in multiple areas around your tank and its equipment. Pairing an Apex Controller with the LDK lets you monitor and control your aquarium in the event of a leak or an overflow. With Neptune Fusion, you can easily set up alarms that will notify you if a sensor ever…

    $549.85 Regular Price: $
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    …they are out of water – cavitate furiously when doing a simple water change – or spinning themselves to ruin. The WAV has advanced sensors that dramatically reduce these events from occurring. Even taking the pump out of water for a cleaning does not require it to be powered down –…

    $349.90 Regular Price: $
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    …magnetic reeds enclosed in liquid level sensors are extremely reliable and long-lasting when utilized properly. Failures are nearly always a result of current overloading. Pumps, solenoids and many other devices that require control by a liquid level sensor carry "steady state" current ratings.…

    $10.99 Regular Price: $

    sensors Low Level: If water drops below this point, the pump will be activated until the water hits the next sensor. Fill Level:1" above the low-level sensor, this sensor turns the fill pump off when it detects water. High Level:1" above the fill level, and 2" above the low-level sensor, this sensor

    $59.99 Regular Price: $

    …magnetic reeds enclosed in liquid level sensors are extremely reliable and long-lasting when utilized properly. Failures are nearly always a result of current overloading. Pumps, solenoids and many other devices that require control by a liquid level sensor carry "steady state" current ratings.…

    $15.99 Regular Price: $

    Sensors. The sensors can be placed in multiple areas around your tank and its equipment. Pairing an Apex Controller with the LDK lets you monitor and control your aquarium in the event of a leak or an overflow. With Neptune Fusion, you can easily set up alarms that will notify you if a sensor ever…

    $2,559.55 Regular Price: $
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    …it delivers WHAT'S IN THE BOX 1x DOS Fluid Metering System DOS pump Aquabus cable 4 meters of tubing Power supply 1x DDR DOS Dual Reservoir DDR with sensors and cable 4 meters of tubing Getting Started Guide Requires: Apex, Apex Classic, ApexEL, Apex Jr., or Apex Light Neptune DOS Instructions

    $449.95 Regular Price: $
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    …large body/heatsink is assisted by fans that help regulate the temperature even further. The fans will automatically engage when the temperature sensor reads over 131°F and will shut off when the temperature falls below 113°F keeping the operating range for the LEDs in a safe zone for a long…

    $899.99 Regular Price: $

    …in the solenoid. It is that easy. The solenoid works in conjunction with the ATO controller and sensor to allow the flow of RODI water to your sump and when the water level is replenished the sensor will tell the controller to shut off power to the solenoid to close the valve and stop the flow of…

    $22.99 Regular Price: $

    …pump, this flow sensor can be placed in line with the flow on any pipe, connected to the FMM, and communicate to your Apex the flow rate of water through that pipe. The FS-50 will work with flow rates from 30-250 gph, and will connect to any standard 1/2" Slip PVC. The flow sensor itself uses…

    $29.95 Regular Price: $

    …that are controlled by the 7090.050 controller this cable will allow you to hook up all three pumps to be controlled by a single 7090 controller with the addition of the 7092.300 connecting cable.The Y adapter will also allow the connection of 2 pumps and a photo sensor as well. Cable length:36"

    $19.29 Regular Price: $

    …flow. The controller gives you multiple programming options including feed mode, wave simulation, oscillating current, night mode (Moonlight Photo Sensor 7097.050required), and auto-adjust wave timing modes. The Tunze Stream 3 can also be controlled by 3rd party aquarium controllers like an Apex or…

    $354.99 Regular Price: $
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    Enjoy a precise water level and peace of mind with the JBJ Dual Sensor auto top off system. With the included sensor cover you never have to worry about tank inhabitants causing false readings again, as an added bonus this cover will prevent sudden surface agitation from causing fluctuating water…

    $99.00 Regular Price: $

    …the rest of your aquarium's filtration. Handling up to 500 GPH of flow through the fleece, after particles start to clog up the fleece the float sensor will automatically trigger the motor to turn the rollers and offer new fleece. New compact design Freestanding or hang-on options Fleece can last…

    $259.99 Regular Price: $
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    …and effectively remove detritus and other foreign particulates from your water without having to ever change a filter sock again. Utilizinga sensor to know when the fleece is starting to clog, the ClariSea will automatically advance the fleece ahead allowing clean fleece to trap more particulates.…

    $399.00 Regular Price: $

    …cables. Built-In WiFi and myGHL Cloud Support Included Float/Optical Sensor Inputs* On-Board Manual Override Buttons Adjustable Speed Brushless Motors Magnetic Stirrer Ports Included* Backward Compatible No Controller Required *sensors and stirrers not included Brushless Stepper Motors When it comes…

    $379.90 Regular Price: $
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    …tray, and that is where the optical eye sensor comes into play. Once the water level reaches the eye, the Klir will automatically activate the roller, exposing new fleece and allowing water to flow freely again, dropping the water level below the sensor. Specifications: Dimensions - 6.875" L x 6"…

    $187.49 Regular Price: $249.99