Auto Top Off System

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    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…

    $127.99 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: $

    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 system will beep to notify 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…

    $99.99 Regular Price: $

    …RO/DI system can cause the solenoid valve to fail 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

    $69.99 Regular Price: $

    …size 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 were…

    $144.99 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: $
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    …for your auto top-off system is not only a reliable solution but it also helps clear wire clutter in and around your aquarium. While this ATO system does require the HYDROS system to function, if you already have a HYDROS aquarium controller, this is a very economical add-on to manage water top off

    $79.99 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…

    $109.00 Regular Price: $

    …See The Neptune Systems ATK v2 uses the robust 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,…

    $224.95 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 or .39".…

    $114.99 Regular Price: $
    Out of Stock

    …or other additives 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…

    $29.90 Regular Price: $

    …been designed with this in mind. The filter sock chamber has been built with an overflow designed for operation with the Klir DI-4 fleece filter system. Another hobbyist-friendly feature is the ability to adjust the water level in the sump. All OCTO Sump models have the ability to adjust the water…

    $438.89 Regular Price: $

    …or draws too much, you will be immediately notified. A few example of supported accessories include: Auto Top Off (ATO) pumps Cooling fans Cabinet LED lights Solenoids to control RO/DI systems 2x Command Bus -- Two Command Bus Ports are available for powering the Control and connecting to and…

    $659.99 Regular Price: $
    Out of Stock

    …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 skimmer to rid your…

    $149.99 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: $

    …current or draws too much, you will be immediately notified. Available Drive Port Accessories Auto Top-Off (ATO) pumps Cooling fans Cabinet LED lights Solenoids to control reverse osmosis systems Command Bus The HYDROS Control 2 includes two Command Bus ports which are used to power the Control…

    $199.99 Regular Price: $

    …for auto top off applications. Our peristaltic pump has a slow, predictable 50 mL per minute flow rate which ensures gradual and subtle changes to water chemistry. Precision two roller design extends pump life and will not back siphon. 24-month warranty offered by Bulk Reef Supply. BRS Top Off Doser…

    $79.99 Regular Price: $
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    …placed to pump water back through the Reefer tank's return plumbing. Additional features of the Reef-Ready sump system include an RO reservoir that can hold a few days worth of top off water to keep the water level, salinity and flow rates consistent throughout the tank. 3+2 Extended Warranty Plans…

    $1,499.00 Regular Price: $
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    …it to be 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 Salt or Freshwater Auto-Top-Off (ATO)…

    $59.95 Regular Price: $

    …size 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 were…

    $144.99 Regular Price: $

    …or set up a Kalk reactor or drip system.By far the most common application for kalkwasser is by adding it to your tanks top offreservoirand then relying on the auto top off system to deliver small amounts of saturated kalkwasser solution throughout the day. We suggest using BRS Calcium Chloride, BRS…

    $19.99 Regular Price: $
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    …tall 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 were…

    $179.99 Regular Price: $

    …or set up a Kalk reactor or drip system.By far the most common application for kalkwasser is by adding it to your tanks top offreservoirand then relying on the auto top off system to deliver small amounts of saturated kalkwasser solution throughout the day. We suggest using BRS Calcium Chloride, BRS…

    $269.99 Regular Price: $

    …All of the reefer systems include a properly sized sump, all the necessary plumbing, integrated auto top off system, and reservoir. When water starts to evaporate all Reefer systems include an integrated top off system and reservoir that can hold a few days worth of top off water to keep the water…

    $3,324.00 Regular Price: $
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    Why does BRS recommend this? Trigger systems has been making sumps for quite some time now and they have won us over with their attention to detail, practical designs and overall aesthetic appeal. With the ability to modify the sump to your needs with adjustable water levels, interchangeable plates…

    $471.99 Regular Price: $

    …been designed with this in mind. The filter sock chamber has been built with an overflow designed for operation with the Klir DI-4 fleece filter system. Another hobbyist-friendly feature is the ability to adjust the water level in the sump. All OCTO Sump models have the ability to adjust the water…

    $311.84 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: $

    …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) offer…

    $10.99 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 the…

    $29.89 Regular Price: $

    …current or draws too much, you will be immediately notified. Available Drive Port Accessories Auto Top-Off (ATO) pumps Cooling fans Cabinet LED lights Solenoids to control reverse osmosis systems Probe Port One of the most remarkable ports on the HYDROS Control 4 is the Probe Port. The Control…

    $449.99 Regular Price: $

    …will usually see a change in salinity from temp, to a top off unit being stuck on, if you have a Neptune Apex Controller we highly recommend investing in the PM2 module and salinity probe. Add the Salinity Module: PM2 to your Apex Neptune System. Real-time monitoring of salinity in reef aquarium…

    $89.95 Regular Price: $
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