Auto Top Off Sensor

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    …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 overfilling.…

    $127.99 Regular Price: $

    …operation by removing the clip, turning the float upside down and replacing the clip. Recommended for water applications like level controllers, auto top systems or other aquarium uses. Normally closed or normally open (see more) Float magnet is encased inside the float 48" leads (22 gauge wire)…

    $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

    $69.99 Regular Price: $

    …utilizing a safe and consistent auto top off system. With multiple configurations, the JBJ A.T.O will fit almost anyone’s needs. With linkable brackets adjust and secure float switches, you will need to add your pump of choice, the JBJ ATO system is a great top off unitfor reefers on a budget.…

    $92.00 Regular Price: $
    Out of Stock

    The HYDROS Water Level Sensor is an optical sensor you can use for a variety of aquarium applications, such as sensing when your tank needs to be topped off or to detect when a dosing container needs a refill. The optical eye is magnetically coupled with the magnet side measuring only thick. It can…

    $39.99 Regular Price: $

    …specifically for aquariums without sumps. The combination of the sleek overflow box and the innovative dual-optical sensor ATO will help to keep your aquarium topped off and your water crystal clear. The overflow box easily mounts to any aquarium with its magnetic mount. It acts as a surface…

    $149.99 Regular Price: $

    …to function, if you already have a HYDROS aquarium controller, this is a very economical add-on to manage water top off functions. HYDROS Water Level Sensor The HYDROS Water Level Sensor contains no moving parts that can fail. Its extremely tiny; a little over a half-inch thick with a circumference…

    $79.99 Regular Price: $

    …vertically which will stack the optical eyes, allowing it to utilize the dual sensors. The sensor can be placed in a bright room or even in complete darkness. Solenoid Valve Installation RO/DI System without an Auto Shut Off Valve - The solenoid valve should be placed between your RO/DI systems…

    $69.99 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…

    $37.95 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…

    $27.95 Regular Price: $

    The perfect All-In-One, Plug-and-Play Auto Top-Off solution for aquariums under 50 gallons As fresh water evaporates from your saltwater aquarium, the salt that is left behind begins to build in concentration. Auto top off systems help to restore osmotic balance in your aquarium by refilling the…

    $142.99 Regular Price: $

    The AutoAqua Smart AWC Duo is an innovative 2-in-1 auto water changing and auto top-off system designed to simplify your tank maintenance routine. With its intuitive touch screen, Quick Security Technology and dual sensor failsafe, you can easily remove and replenish aquarium water both hands and…

    $307.99 Regular Price: $

    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. Aquahub DIY Top-it-Off Kit Premium Kit includes: (2) Aquahub…

    $52.99 Regular Price: $

    …Systems pH/ORP Expansion Module: Monitor and Control pH or ORP and temperature 6 digital inputs for float switches, water on floor sensors, pressure sensors, etc Full datalogging support in Apex Base module Up to 240 AquaBus modules can be added to the Apex system Plug and Play - Automatically…

    $89.95 Regular Price: $

    …Optical sensors are great for precise level control and have no moving parts to wear out or become blocked, making them a reliable alternative to mechanical switches. Optical sensors are very versatile and great for a variety of water-monitoring applications. Auto Top Off with one or two Sensors

    $89.90 Regular Price: $

    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…

    $109.00 Regular Price: $

    Why does BRS recommend this? Bulk Reef Supply tried many different water level switches and auto top off solutions before giving the Tunze 3155 Osmolater Universal Auto Top Off BRS Recommended status. Despite its higher price this is by far our favorite solution. Spending the extra money on a Tunze…

    $229.99 Regular Price: $

    …Fluid Metering Module with re-designed optical sensors to monitor your water level. The dual sensor design allows for the ATK to have one main water level sensor and the other as a backup should the first ever get dirty. On top of the optical sensors, a mechanical float valve is integrated into the…

    $224.95 Regular Price: $

    …shut the pump off and create an audible alarm. Empty Reservoir Alert: The system can detect when the top off pump is drawing excess air/running dry and automatically shut the pump off and create an audible alarm. Sensor Obstruction Alert: The system will detect if the in-tank sensor needs to be…

    $99.99 Regular Price: $

    …Tunze Osmolator Nano 3152 Auto Top Off is designed for smaller tanks, 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…

    $114.99 Regular Price: $
    Out of Stock

    …The Neptune LLS is a first of its kind industry exclusive! While most liquid level sensors simply measure the presence or absence of liquid at a predetermined sensor height, the LLS is one continuous vertical sensor that can identify the exact depth of a liquid in both inches and centimeters at any…

    $44.95 Regular Price: $
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    sensor. The MOS plugs into an Apex FMM port and uses reflected infrared light to 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,

    $39.95 Regular Price: $

    …multiple float sensors to trigger an alarm and stop water supply in the event of overflow. Features High precision stepper motor WiFi control via free mobile App Fully customizable water change and/or top off schedule Battery backup and memory settings Includes float sensors and alarms for overflow…

    $494.99 Regular Price: $
    Out of Stock

    …level or leakage sensors. This splitter is useful for connecting sensors such as the float switch to Mini-DIN port on the Profilux controller and Doser 2.1 dosing pump. Allows 2 sensors on a single port Facilitates ATO functions on controller Facilitates Automatic Water Changes Specifications Sensor

    $10.70 Regular Price: $12.90
    Out of Stock

    …auto-top-off. This mechanical float switch is designed to be mounted vertically. Compatible with Profilux & Doser 2.1 systems Auto Top Off with one or two Sensors Automatic Water Changes Leakage detection GHL electrodes are built to the highest laboratory-grade specifications. They are durable,…

    $41.90 Regular Price: $

    …of fresh water for auto top off systems Hand-crafted, premium 100% acrylic construction Recessed flush mount lid with finger cutouts for easy removal Clear front panel with engraved graduated measurements Cutouts for ATO pump power cables and water hosing Apex pump and sensor mounts Twin 1/4" John…

    $199.99 Regular Price: $
    Out of Stock

    …of fresh water for auto top off systems Hand-crafted, premium 100% acrylic construction Recessed flush mount lid with finger cutouts for easy removal Clear front panel with engraved graduated measurements Cutouts for ATO pump power cables and water hosing Apex pump and sensor mounts Twin 1/4" John…

    $199.99 Regular Price: $

    …of fresh water for auto top off systems Hand-crafted, premium 100% acrylic construction Recessed flush mount lid with finger cutouts for easy removal Clear front panel with engraved graduated measurements Cutouts for ATO pump power cables and water hosing Apex pump and sensor mounts Twin 1/4" John…

    $249.99 Regular Price: $
    Out of Stock

    …of fresh water for auto top off systems Hand-crafted, premium 100% acrylic construction Recessed flush mount lid with finger cutouts for easy removal Clear front panel with engraved graduated measurements Cutouts for ATO pump power cables and water hosing Apex pump and sensor mounts Twin 1/4" John…

    $249.99 Regular Price: $
    Out of Stock

    …of fresh water for auto top off systems Hand-crafted, premium 100% acrylic construction Recessed flush mount lid with finger cutouts for easy removal Clear front panel with engraved graduated measurements Cutouts for ATO pump power cables and water hosing Apex pump and sensor mounts Twin 1/4" John…

    $399.99 Regular Price: $
    Out of Stock

    …of fresh water for auto top off systems Hand-crafted, premium 100% acrylic construction Recessed flush mount lid with finger cutouts for easy removal Clear front panel with engraved graduated measurements Cutouts for ATO pump power cables and water hosing Apex pump and sensor mounts Twin 1/4" John…

    $399.99 Regular Price: $
    Out of Stock

    AutoAqua auto top off units now have the ability to hook directly up to a RODI solenoid to replace the pump they are equipped with out of the box. If you have upgraded to a larger system, or just simply don't have the room for an ATO storage container this may be the option for you. Replacing the…

    $29.89 Regular Price: $
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