Auto Top Off

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    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…

    $199.99 Regular Price: $

    The 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…

    $99.99 Regular Price: $

    With huge features jammed in a tiny package, the Duetto is 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…

    $119.99 Regular Price: $

    …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 deactivates the pump when it…

    $59.99 Regular Price: $

    …you that your aquarium has not been topped off for an unusual amount of time, at least 24 hours, and double the average time between Top Off. Ex: if the Avg. time between topping off is 12 hours, the system will notify you after 24 hours of not topping off. * Overfill Alert: The system develops…

    $89.99 Regular Price: $

    …prematurely.  RO/DI System with an Auto Shut Off Valve - The solenoid valve can be placed anywhere after your DI and before the water enters your reservoir. This method will let you use your RODI system like normal if you split the RO or DI water off to any other reservoirs while allowing…

    $69.99 Regular Price: $

    …  An auto top off system is one of the first automated devices any reef keeper should have. When water evaporates, the salt is left behind slowly increasing the salinity of the tank. By utilizing an ATO device evaporated water can easily be replenished by the top off unit throughout…

    $134.99 Regular Price: $
    Out of Stock

    …  An Auto Top Off container is perfect for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump…

    $108.99 Regular Price: $

    …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: $

    …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 unit for reefers on…

    $84.99 Regular Price: $

    …as a dosing pump for Kalkwasser, auto top offs, calcium reactors and other aquarium uses.   The Aqua Lifter Vacuum Pump is commonly used for applications that don't require precise dosing. They work best for dosing Kalkwasser or as auto-top off pumps. This unique one-of-a-kind vacuum…

    $59.99 Regular Price: $

    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…

    $22.99 Regular Price: $

    …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…

    $199.99 Regular Price: $

      Octo Reef Sumps offer attractive design, the versatility and features you need, and they’re built to last. Each Octo Reef sump is hand-built from solid acrylic for years of trouble-free service. They’ve got you covered with plenty of room for your skimmer and return…

    $269.99 Regular Price: $

    …  An Auto Top Off container is perfect for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump…

    $134.99 Regular Price: $

    …to the floor. All of the reefer systems include a proportionate sump, all the necessary plumbing, integrated auto top off system, and reservoir.   Going from the top of the Reefer XXL system down to the bottom, the first thing you will notice is the crystal clear glass and elegant…

    $3,699.00 Regular Price: $

    …maintained with the removable screen but the PMUP will also now automatically shut off when it detects that it is running dry, but also over temperature protection.   Perfect for: * Auto Top Off * Carbon Reactors * GFO Reactors * BioPellet Reactors * Ideal for…

    $49.95 Regular Price: $

    Recommended for water applications like level controllers, auto top systems or other aquarium uses * Normally closed or normally open (see more) * 14” leads (22 gauge wire) * M16 straight threading - includes nut and silicon o-ring * 5/8" Mounting hole required …

    $15.99 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…

    $99.00 Regular Price: $

    …of the solution.   How Does it Work? Simply connect the IceCap Kalk Mixer to any freshwater reservoir with the use of an Auto Top Off unit or dosing pump. Kalkwasser powder is then added to the mixing chamber via the handy quick-fill cap. The adjustable speed motor should then…

    $379.99 Regular Price: $
    Out of Stock

    …in your ATO, they can lead to premature failure.    Auto top off pumps can fail from time to time and having a back-up pump on hand is always a smart thing to do. Making sure your system keeps topping off for evaporation is one of the biggest keys to a stable and successful reef…

    $23.00 Regular Price: $

    The easiest top off reservoir to refill is now here. Just slide out the easy to access acrylic drawer and fill it with up to 5 gallons of fresh water. Just put your favorite ATO pump in the reservoir through the pre-cut out opening in the back and you are ready to top off. Dimension - 18.2" L x…

    $199.99 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: $

    The easiest top off reservoir to refill is now here. Just slide out the easy to access acrylic drawer and fill it with up to 5 gallons of fresh water. Just put your favorite ATO pump in the reservoir through the included 4" x 1" opening in the back and you are ready to top off. Dimension - 8.1"…

    $129.99 Regular Price: $

    …This is a very handy application for the FMM. Place a flow sensor on a device like a carbon/gfo/biopellet reactor and it serves many purposes. First off, you will know if your pump is not not flowing correctly or failed altogether. Next, you can easily fine-tune the flow into the reactor by watching…

    $199.95 Regular Price: $

    …  An Auto Top Off container is perfect for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump…

    $156.99 Regular Price: $

    …is extremely precise, robust, and versatile.   The Versa excels in many precision aquarium pump applications, including; dosing, auto top off (ATO), automated water changes, and reactor feeding. * Precision DC Stepper Motor with planetary gearing mechanism * Intelligent…

    $149.99 Regular Price: $
    Out of Stock

    …out the mainstays for a really well rounded sump design.   Features: * High quality full cast acrylic construction and full top support brace * Quiet water flow operation design * Interchangeable floss filter box and filter sock holder (filter sock included) *…

    $299.99 Regular Price: $

    Easily replace the low voltage metering pump for your Tunze Osmolator Universal 3155 auto top off system.

    $23.99 Regular Price: $

      Octo Reef Sumps offer attractive design, the versatility and features you need, and they’re built to last. Each Octo Reef sump is hand-built from solid acrylic for years of trouble-free service. They’ve got you covered with plenty of room for your skimmer and return…

    $509.99 Regular Price: $

    Prevent overflows or equipment from running dry!   Customize your AutoAqua Smart ATO, ATO Micro, or AWC with your own pump. Just insert the male barrel plug into your Smart controllers pump port, plug the outlet into any wall socket, and then your pump into the Smart AC Socket. This…

    $30.00 Regular Price: $
    Out of Stock

    …  An Auto Top Off container is perfect for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump…

    $182.99 Regular Price: $