Level Switch

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    …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 used as either…

    $59.99

    …like level controllers, auto top off (ATO) systems or other aquarium uses. The wires complete a circuit when the float is down. You can reverse the operation by removing the clip, turning the float upside down and replacing the clip.   Deluxe Madison Float Switch is great for: General water level

    $16.49

    …shut-down. When the reeds inside our switches are exposed to this kind of "spiking voltage" they can overheat and become deformed. In some cases they may even weld together or break off, causing the switch circuit to remain closed (or open) regardless of the level of the float. Deformed reeds can…

    $16.99

    …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 RODI water. The solenoid…

    $22.99

    …Safety Works in Complete Darkness Includes RO Solenoid Valve Eliminates Waste Water Run-Off     1-7 Day Delay Timer Traditional float valves and switches will automatically turn on your RODI system after a couple drops of water are removed from the reservoir which can cause TDS creep and simply an…

    $69.99

    …timer based Safety Multiple configurations Visual LED signals Includes float switches 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…

    $84.99

    …a remote sump installation, a Socket Switch is included that allows you to run a pump up to 10A (1,200W). They even include a solenoid valve for aquariums that are topped off directly with an RO/DI system.    Features: World' First 4-Sensor ATO Low water level optical sensor Two sensor dual-stage…

    $199.99

    …shut-down. When the reeds inside our switches are exposed to this kind of "spiking voltage" they can overheat and become deformed. In some cases they may even weld together or break off, causing the switch circuit to remain closed (or open) regardless of the level of the float. Deformed reeds can…

    $15.99

    …time monitoring of your reef tanks dissolved oxygen levels. Real-time monitoring of dissolved oxygen in reef aquarium Module has extra Temp Probe port (sold separately) I/O Switch Inputs for ATO, feed buttons, leak alarms, etc.   Recommended DO level for reef tanks is between 4.5ppm - 7ppm   With so…

    $94.95

    …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 containers. Traditionally float switches have been the most commonly used types of these devices, however they are prone to all kinds…

    $199.95

    …get optimal waste removal. On top of that, these skimmer pumps include a float switch that allows you to shut the skimmer pump off when the waste collector is full, or if your sump has reached a high or low water level.    Ideal Replacement Skimmer Pump for: Classic-200INT SRO-2000EXT SRO-3000EXT…

    $334.99

    …2 part solution, install the cap, and connect it to your dosing system. Every reservoir comes with a liquid level sensor that plugs directly into the Kamoer doser. The float switch mounts to the cap of the jug with the included bracket that also holds the dosing pick-up tube perfectly placing…

    $14.99

    …shut-down. When the reeds inside our switches are exposed to this kind of "spiking voltage" they can overheat and become deformed. In some cases they may even weld together or break off, causing the switch circuit to remain closed (or open) regardless of the level of the float. Deformed reeds can…

    $27.99

    Replacement float switch grommet for passing wiring through the Rollermat housing. If your Theiling Roller Mat has any parts that are damaged, worn, or you simply just want to keep an extra on hand we carry OE Theiling replacement parts.

    $2.49

    Replacement float level switch for the Theiling Rollermat. If your Theiling Rollermat has any parts that are damaged, worn, or you simply just want to keep an extra on hand we carry OE Theiling replacement parts.

    $19.99

    switch that directly connects to the VarioS pump controller and will shut the skimmer down when the cup is full, eliminating messy and smelly overflows.  Controlling the flow through the Elite series from Reef Octopus is done by the wedge pipe, which can be twisted easily to adjust the water level

    $677.99

    switch that directly connects to the VarioS pump controller and will shut the skimmer down when the cup is full, eliminating messy and smelly overflows.  Controlling the flow through the Elite series from Reef Octopus is done by the wedge pipe, which can be twisted easily to adjust the water level

    $1,049.99

    It is not common but if you ever need a replacement level switch for your Theiling Compact Rollermat we have you covered. This is the OEM replacement level switch for the Compact Rollermat and only takes a few minutes to replace.    What's Included? 1x Replacement Compact Rollermat Level Switch

    $11.99

    Replacement float switch bracket for Theiling Roller Mat's level switch. If your Theiling Roller Mat has any parts that are damaged, worn, or you simply just want to keep an extra on hand we carry OE Theiling replacement parts.

    $4.49

    …shut-down. When the reeds inside our switches are exposed to this kind of "spiking voltage" they can overheat and become deformed. In some cases they may even weld together or break off, causing the switch circuit to remain closed (or open) regardless of the level of the float. Deformed reeds can…

    $10.99

    …shut-down. When the reeds inside our switches are exposed to this kind of "spiking voltage" they can overheat and become deformed. In some cases they may even weld together or break off, causing the switch circuit to remain closed (or open) regardless of the level of the float. Deformed reeds can…

    $28.99

    …2 part solution, install the cap, and connect it to your dosing system. Every reservoir comes with a liquid level sensor that plugs directly into the Kamoer doser. The float switch mounts to the cap of the jug with the included bracket that also holds the dosing pick-up tube perfectly placing…

    $14.99

    …2 part solution, install the cap, and connect it to your dosing system. Every reservoir comes with a liquid level sensor that plugs directly into the Kamoer doser. The float switch mounts to the cap of the jug with the included bracket that also holds the dosing pick-up tube perfectly placing…

    $14.99

    …to prevent protein skimmer overflows as well as reduce the strong skimmate smell. Float switch connected to power source for your protein skimmer - automatically shuts off your protein skimmer if float switch is activated. Ping pong ball apparatus stops waste container from overflowing. High quality…

    $219.99

    …to combine nearly every wish-list innovation they could think of, from a built-in handle and float switch in the collection cup to integrated air lines, dual needle-wheel impellers, and water level marks on the skimmer body.   The innovations don't stop with the body design. The pump controller…

    $649.99

    …on the market, there are no ping-pong balls or float switches that are prone to failing regardless of being in a nasty skimmate environment. Avast Marine equips their skimmate lockers with an air pressure sensitive control box. As the fluid level rises in Davey's Locker it will trap air inside of…

    Starting at:
    $174.99

    …on the market, there are no ping-pong balls or float switches that are prone to failing regardless of being in a nasty skimmate environment. Avast Marine equips their skimmate lockers with an air pressure sensitive control box. As the fluid level rises in Davey's Locker it will trap air inside of…

    Starting at:
    $189.99

    switch that directly connects to the VarioS pump controller and will shut the skimmer down when the cup is full, eliminating messy and smelly overflows.  Controlling the flow through the Elite series from Reef Octopus is done by the wedge pipe, which can be twisted easily to adjust the water level

    $572.99

    switch that directly connects to the VarioS pump controller and will shut the skimmer down when the cup is full, eliminating messy and smelly overflows.  Controlling the flow through the Elite series from Reef Octopus is done by the wedge pipe, which can be twisted easily to adjust the water level

    $784.99

    …any sump checking for leaks and function. It is also important to check the water level in the sump during a simulated power outage. It is possible for the water level in the Rollermat to rise up to the float switch activating the motor and rolling through the fleece. If this happens we suggest…

    $449.99 $359.99

    Why does BRS recommend this? Most float switch brackets can swing around or change level by just simply bumping them with your hand or arm.  The Deluxe Madison Horizontal Mount Float Switch is just a typical float switch however the greatest part is that it has standard ½” NPT Male threads for…

    $20.99

    …to regulate the water level in your fresh water storage container. It uses two float switches to control an electronic valve. When the water level drops below the first float switch, the valve is opened allowing the container to fill until it reaches the second float switch and the valve turns off.…

    $199.99