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    …a relay.   In the illustration, a relay acts as a switch for a pump, thereby isolating the float switch from any spikes that the pump may draw. The float switch turns the relay coil on and off. In this way, the only current handled by the float switch is that small amount required by the relay coil.…

    $15.99

    …Add the Salinity Module: PM2 to your Apex Neptune System. Real-time monitoring of salinity in reef aquarium Module has extra Temp Probe port I/O Switch Inputs for ATO, feed buttons, leak alarms, etc. Probe Sold Separately.   Features of the Neptune Systems Salinity Expansion Module: Monitor/Control…

    $84.95

    …Controller. Float Switches for sump alerts or ATO (Auto Top Off) Push Buttons for special feed, cleaning, ect. modes Leak Detectors Magnetic switches on cabinets for intrusion detection   Customize your Neptune Apex Controller with the I/O Breakout Box. Add float switches, magnet switches, or any…

    $39.95

    …consumption readings the Kill A Watt PS-10 is designed to help save you money. Large soft touch buttons Illuminated LCD display Illuminated power switch Adjustable circuit breaker 10x grounded outlets Low profile wall plug Six foot power cord UL listed   The Kill A Watt PS-10 can protect your…

    $69.99

    …a relay. In the illustration, a relay acts as a switch for a pump, thereby isolating the float switch from any spikes that the pump may draw. The float switch turns the relay coil on and off. In this way, the only current handled by the float switch is that small amount required by the relay coil.…

    $10.99

    …a relay.   In the illustration, a relay acts as a switch for a pump, thereby isolating the float switch from any spikes that the pump may draw. The float switch turns the relay coil on and off. In this way, the only current handled by the float switch is that small amount required by the relay coil.…

    $20.99

    …Cable Length: 4ft AC Switch Max Load:10 A / 1,200 W @ 120V AC AC Switch Cable Length: 115 inches Power Supply Cable Length: 67 inches   What's Included? Ultimate ATO Controller Module+ Mounting Bracket 2x Dual-Optical Sensors w/magnetic housing DC Pump AC Socket Switch RO Solenoid Valve 7 ft…

    $199.99

    The Aquatec pressure switch is used to shut down the pump when the switch detects pressure build up caused from your holding container becoming full. Most often triggered with a float valve Your system must have a working auto shut off kit for this switch to work properly. ¼” Push Connect fittings…

    $19.99

    …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

    …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 it at the bottom of the dosing…

    $14.99

    Use the Water Valve from Tunze to connect to the Tunze Osmolator - the water valve replaces the pump with an electrically operated solenoid. Use it to control the flow of water from a tube rather than pumping it from a container like gravity-fed auto top off system.   Max Water Pressure - 145 PSI…

    $91.37 $73.10

    …port I/O Switch Inputs for ATO, feed buttons, leak alarms, etc. Monitor multiple tanks Galvanic Isolation for accurate and reliable probe readings   Features of the Neptune Systems pH/ORP Expansion Module: Monitor and Control pH or ORP and temperature 6 digital inputs for float switches, water on…

    $84.95

    …and also another opening for an I/O switch port that would be used with the breakout box for monitoring float switches, magnet switches, and much, much more.   Features Monitor/Control Dissolved oxygen and temperature 6 digital inputs for float switches, water on floor sensors, pressure sensors,…

    $94.95

    Prevent overflows or equipment from running dry! 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 attachment makes placement and…

    $59.99

    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…

    $22.99

    …a relay.   In the illustration, a relay acts as a switch for a pump, thereby isolating the float switch from any spikes that the pump may draw. The float switch turns the relay coil on and off. In this way, the only current handled by the float switch is that small amount required by the relay coil.…

    $27.99

    …a relay.   In the illustration, a relay acts as a switch for a pump, thereby isolating the float switch from any spikes that the pump may draw. The float switch turns the relay coil on and off. In this way, the only current handled by the float switch is that small amount required by the relay coil.…

    $16.99

    …a relay.   In the illustration, a relay acts as a switch for a pump, thereby isolating the float switch from any spikes that the pump may draw. The float switch turns the relay coil on and off. In this way, the only current handled by the float switch is that small amount required by the relay coil.…

    $28.99

    …With complete control through the VarioS Controller, you can control the flow of the pump, enter feed modes (15 or 60 minutes), add a safety float switch (included), or simply connect it to a third party controller like an Apex. Max Flow: 792 GPH Max Head: 13 FT Dimensions: 5" L x 3" W x 4.15" H  …

    $214.99

    …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 it at the bottom of the dosing…

    $14.99

    …use two-piece body designs that create sharp edges and breaks bubbles. Every Elite skimmer comes with an integrated skimmer cup overflow float 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. …

    $572.99

    …your equipment and how it looks, this is the sump for you. From cable management from the return pump power cord to the delicate probe and float switch cables they are all neatly arranged to keep your eyes on the equipment and not a birds nest of cables that is all too common in this hobby. With all…

    $2,349.99

    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

    …the vertical Deluxe Madison Float switch, as well as the Float Switch with Splash Guard.   Note: NPT threads are tapered and will get tighter as it is screwed onto the float switch. Depending on the thickness of the material you will be mounting the float switch to you may need a 1/8" plastic washer…

    $.99

    …Faucet Adapter 13A - Original 2 piece faucet adapter lets your no spill clean and fill system to connect to any standard faucet. Replacement Switch 13C - Joins the male and female connection that is close to the gravel tube giving you full control of flow in and out of the aquarium. Replacement…

    Starting at:
    $3.99

    …your equipment and how it looks, this is the sump for you. From cable management from the return pump power cord to the delicate probe and float switch cables they are all neatly arranged to keep your eyes on the equipment and not a birds nest of cables that is all too common in this hobby. With all…

    $2,499.99

    …Leak Detector Pad when water is detected it will expand and trip the Flow-Lok Safety lever to stop the flow of water.  The Flow-Lok Drip Tray mounts directly to the canisters of your RODI system so any leaks go directly into the tray where the Flow-Lok switch can be mounted for an instant shut off.

    $29.99

    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…

    $199.99 $159.99

    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

    …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. The Tunze RO Water Controller…

    $212.45 $169.96

    Replace the pump on your IceCap ATO with a Solenoid Valve Compatible with the IceCap ATO system. IceCap's ATO Solenoid Valve can work with a gravity fed auto top off reservoirs or just connect it directly to your RODI system. The solenoid valve will replace the pump that comes with the IceCap ATO…

    $23.00

    The Tunze Switched Socket Outlet connects any brand of pump to the Osmolator Universal 3155 Auto-Top off system. In the Osmolator and Osmomat, the enclosed low-voltage centrifugal pump can be replaced by this switched socket outlet in combination with a more powerful pump. The switched socket outlet…

    $71.53 $57.22