Auto Top Off

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    …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 deactivates the pump when it senses water.…

    $69.99 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 or .39".…

    $114.99 Regular Price: $
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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: $
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    …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 and…

    $99.99 Regular Price: $

    …hobbyist has many challenges, but none is more annoying than the chore of adding water, every day, to make up for that lost to evaporation (a.k.a. topping off/up). This alone usually makes the automatic top-off (ATO) device the first piece of automation equipment purchased. The ironic flip side of…

    $224.95 Regular Price: $

    …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: $

    …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: $

    …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: $

    The IceCap Gravity ATO is a compact and simple auto top off solution for those wishing to replenish evaporated water in their aquariums without dealing with pumps, sensors, or power cords. No electricity required for operation Ideal for small aquariums or sumps Simple to set up and operate How It…

    $17.99 Regular Price: $

    …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 to any other reservoirs while allowing the…

    $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…

    $112.49 Regular Price: $124.99

    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…

    $45.99 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 15 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…

    $219.99 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: $

    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: $

    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: $

    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: $

    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" L x…

    $142.99 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: $

    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 is the perfect…

    $33.00 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…

    $197.09 Regular Price: $218.99

    …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)…

    $44.95 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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    …water from any free-floating particles, leading to longer pump life and cleaner water. The RO reservoir is perfect for holding freshwater for top offs to replace evaporated water in your aquarium. Just add your favorite ATO system for days or weeks of hassle-free evaporation management! *The larger…

    $3,734.10 Regular Price: $4,149.00
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    …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 prevention Specifications Flow: 900mL per minute + Dosing…

    $494.99 Regular Price: $

    …so you can track your water consumption. Royal has also provided easy ways to add an ATO pump or other equipment, with access points built into the top cover. Specifications Dimensions: 11.81"L x 23.62"W x 19.69"H Lid Opening: 6.3" x 8.66" Volume: 19.02 gallons (72 liters) Material: Rigid PVC &…

    $599.99 Regular Price: $
    Out of Stock

    …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,…

    $19.99 Regular Price: $
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    Easily replace the low voltage metering pump for your Tunze Osmolator Universal 3155 auto top off system.

    $28.29 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. How to Use Kalkwasser with an ATO System…

    $39.99 Regular Price: $
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    …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 All REEFER aquariums have included…

    $1,499.00 Regular Price: $
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    …and dosing tube holders round 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 Removable heater holder, test probe holder…

    $369.99 Regular Price: $
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