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 Tunze…

    $199.99

    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". Max…

    $99.99

    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 the…

    $119.99

    …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…

    $199.95

    …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 unit for reefers on a budget.…

    $84.99

    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…

    $149.99

    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

    …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

    …thick walls.   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 the…

    $134.99

    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

    …titanium ATO controller utilizes conductivity sensors making it a perfect auto top off controller for either fresh or saltwater aquariums. Hauling buckets, and daily refilling are now a thing of the past. Having an auto top off system monitor and control the water level in your aquarium will lead to…

    $69.99

    …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

    …Section (15.5" x 10.25") - This space is most commonly used for a refugium to grow macro algae and hold rock or sand for additional surface area. The top brace has a relief cut allowing it to accept most clamp-on or gooseneck style mounts.  Return Pump Section (6" x 15.5") - After the baffle, your…

    $449.99 $359.99

    …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…

    $151.99

    …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)…

    $49.95

    Auto Water Change Plus Auto Top Off    Change your reef tank's water automatically with AutoAqua's AWC system. AWC & ATO All-In-One. Water changes are one of the most time-consuming maintenance tasks with saltwater aquariums. There has been plenty of debate over how much water you should change and…

    $209.99

    …when the unit is initially energized when the state changes the outlet will turn off preventing catastrophe. Use as High or Low Level Peace of mind No Moving Parts Plug & Play Magnetic Attachment Easy to Clean Sensor Auto Time Delay 10-Foot Cable   Specifications: Max Power Output - 1100W @ 110VAC…

    $59.99

    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   Mounts with wires outside of chamber.  …

    $15.99

    …give any sump that custom touch and keeping the wires completely out of water.   Recommended for water applications like level controllers, auto top off (ATO) systems or other aquarium uses.    Deluxe Madison Float Switch is great for: General water level control application Aquarium top-off…

    $20.99

    …is the refugium section. The water then flows over the second baffle through 2 perforated platforms and under the third baffle into Section 3. The top perforated platform comes with a foam block filter and the bottom one is open to use for several different filtration methods (bag of carbon, bio…

    $439.99

    …Dimensions: 34” L x 15” W x 15” H Skimmer Chamber: 13” x 14” Refugium Chamber: 5" x 14" Return Chamber: 8” x 14” Approximate Water Volume: 30 gallons Top Off Volume: 2.4 gallons Skimmer Chamber Water Level: Adjustable from 7” – 9” with Level-O-Matic We suggest choosing the largest sump that you can…

    $402.49

    …coupling you can use any adapter, even 3/4". The push-lock side of the fittings do not change in size.   Anti-Drip Valve Anti-Drip fittings will seal off the coupling end any time the connection between the fittings is disconnected. This is super handy for reactors, ATO containers, saltwater mixing…

    Starting at:
    $13.99

    …set up a Kalk reactor or drip system. By far the most common application for kalkwasser is by adding it to your tanks top off reservoir and 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,…

    Starting at:
    $17.49

    …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 overfill alarm…

    $199.99

    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…

    $30.00

    Sicce's Mi Mouse pump is a fully submersible, compact pump with the suction inlet on the bottom for optimum operation with low water levels. Small size is great for indoor or outdoor fountains, aquariums, and terrariums. Output: 90 GPH Max Head Height: 1.9 Ft Flow Regulator Power Consumption: 6W…

    $21.99

    …is the refugium section. The water then flows over the second baffle through 2 perforated platforms and under the third baffle into Section 3. The top perforated platform comes with a foam block filter and the bottom one is open to use for several different filtration methods (bag of carbon, bio…

    $589.99

    …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 also function intermittently, causing…

    $16.99

    …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…

    $176.99

    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…

    $99.99

    …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…

    $119.99

    …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…

    $129.99