Level Sensor

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    …This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO (auto-top-off), as a high-level warning sensor in your sump, water storage level sensor, and…

    $34.95 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…

    $24.95 Regular Price: $

    …is included.  * Magnetic Sensor Slider * Moveable and Removable Middle Partition wall * Input Plate Gasket Reduces Salt Creep * Four Dosing Tube Quick Connects * Polycarbonate Lid Over Fleece Chamber * Adjustable Water Level & Self Adjusting Top Platform *…

    $989.99 Regular Price: $

    …your cup and not your sump. Just mount the sensor inside of your cup at the desired location and plug your skimmer pump into the 10 amp outlet for simple skimmer security! * Peace of mind * No Moving Parts * Plug & Play * Easy Level Adjustment * Magnetic Attachment *…

    $59.99 Regular Price: $

    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 attachment makes placement and adjustments of the level sensor quick and easy. The Smart Level can be…

    $59.99 Regular Price: $

    …The 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: $

    …available. It utilizes an electronic eye sensor to monitor water levels and a backup float switch sensor with an optional audible alarm. The controller protects the quiet metering pump from running dry and reports an empty storage tank. Two magnetic holders for sensors and multiple mounting brackets…

    $199.99 Regular Price: $

    …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…

    $699.95 Regular Price: $

    …skimmate lockers with an 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…

    $199.99 Regular Price: $

    …The 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: $

    …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: $

    …the perfect ATO for your aquarium. XPAqua’s 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…

    $119.99 Regular Price: $

    …Optical Sensor Installation The optical sensor can be mounted in any reservoir with a wall thickness under 1/2" at the level you wish to fill it up to. The cable should be positioned vertically which will stack the optical eyes, allowing it to utilize the dual sensors. The sensor can be placed…

    $69.99 Regular Price: $

    …and brackets   Float Sensors The A.T.O. is equipped with (2) float sensors that activate within seconds when your water level drops and automatically refills your sump or tank until it reaches your desired set point. Each float sensor has been designed with an exterior guard…

    $84.99 Regular Price: $

    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 levels. Everything…

    $99.00 Regular Price: $

    …of ammonia are building up, giving you time to find the source, do a water change, and dose additives to bring the levels back down to a safe range.\n \n Features\n\n* Seachem sensor technology\n* Continuously detects and monitors free ammonia\n* No test kits, chemicals, or procedures are needed\n*…

    $7.89 Regular Price: $
    Out of Stock

    …piece of equipment just to read what the sensor is seeing. We personally like inputting all of our readings into a spreadsheet to make a chart of light output, as well as overlay the readings on a photo as well. Having a picture with your tanks PAR levels is very handy to have when placing new…

    $234.00 Regular Price: $

    …World' First 4-Sensor ATO Low water level optical sensor Two sensor dual-stage overfill alarm w/QST programming One sensor for run-dry protection Versatile & easy plug-and-play installation Super precise water level control No programming or adjustments…

    $199.99 Regular Price: $

    …readings on a photo as well. Having a picture with your tanks PAR levels is very handy to have when placing new corals in your tank.   * Resolution - 0.1 µmol m-2 s-1 * Calibration Factor - custom for each sensor and stored in the firmware * Calibration Uncertainty -…

    $438.00 Regular Price: $

    …infrared 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,

    $59.99 Regular Price: $

    …10.5" x 8.5" x 5.5" * Capacity - 2000ml per side (0.52 gallons) * Apex, Apex Lite, or Apex Jr. and DOS dosing system required to operate level sensors   What's in the Box? * DDR with sensors and cable * 4 meters of tubing * Getting Started Guide

    $199.95 Regular Price: $

    …Smart Skimmer Security Sensor - Just place the penny-sized sensor in your skimmers collection cup, and plug the pump into the outlet connected to the Smart Skimmer Sensor for overflow protection.   Smart Temp Security Sensor - Pre-set safe temperature levels will automatically cut…

    $159.99 Regular Price: $
    Out of Stock

    …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…

    $149.99 Regular Price: $

    …market today. The Micro ATO includes an optical water level sensor to keep an eye on the level within the sump with no moving parts. The optical sensor is very reliable, even in complete darkness, keeping a steady water and salinity level replacing any evaporated water with fresh water. The Micro…

    $134.99 Regular Price: $
    Out of Stock

    …The 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.…

    $16.99 Regular Price: $

    …The 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.…

    $28.99 Regular Price: $

    …approximately 50 gallons and under. One of the safest ATO’s available. Utilizes a single sensor to monitor water levels and a controller that protects against overdosing. * Magnetic holder for sensors up to 10mm or .39". * Max Head Height: 7.0 ft   Introducing…

    $99.99 Regular Price: $

    …Micron Rating - 20 micron   What's Included? 1x ClariSea SK-3000 Filter System 1x SK-3000 Fleece Roll 1x Float Level Sensor Assembly Instructions    Clarisea Smart Controller Guide  Clarisea Quick Start Guide   Mounting…

    $375.00 Regular Price: $

    …Micron Rating - 20 micron   What's Included? 1x ClariSea SK-5000 Filter System 1x SK-5000 Fleece Roll 1x Float Level Sensor Assembly Instructions    Clarisea Smart Controller Guide  Clarisea Quick Start Guide   Mounting…

    $399.00 Regular Price: $

    …and add even more functionality!   OPTICAL WATER-LEVEL SENSOR (OPTIONAL) There are many useful purposes for water-level sensors on an aquarium. They can help you build an auto-top-off, monitor the levels in your supplement containers, even help automate saltwater mixing…

    $199.95 Regular Price: $

    …only * Internal Dimensions - 1.4\"L x 1.4\"W x .6\"H * External Dimensions - 1.75\"L\" x 1.25\"W * Warranty - 12 Months * Water level detection - Optical   What's Included? 1x Sensor 60\" Tubing 1x Power Supply 1x Pump 1x Tubing Holder

    $89.99 Regular Price: $

    …and add even more functionality!   OPTICAL WATER-LEVEL SENSOR (OPTIONAL) There are many useful purposes for water-level sensors on an aquarium. They can help you build an auto-top-off, monitor the levels in your supplement containers, even help automate saltwater mixing…

    $99.95 Regular Price: $