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ATO SYSTEMS (130)
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Tunze Osmolator 3 Auto Top Off - 3154.000$249.99
Straightforward and safe water level controller for fresh and sea water with optical control sensor and independent thermal safety sensor....
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Tunze Osmolator 3 Nano$149.99
The TUNZE® Osmolator 3 nano is a simple and safe device with just one sensor for maintaining a constant water...
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Coralvue HYDROS Triple Water Level Sensor ATO Kit$92.39
The CoralVue HYDROS Auto Top-Off Kit Includes: HYDROS Triple Water Level Sensor (plugs into HYDROS Sense Port), HYDROS DC Micro...
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Neptune PMUP v2 - Practical Multi-purpose Utility Pump v2$59.99
The PMUP is a multi-purpose pump that can be used for many different tasks on your aquarium. Power supply not...
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Hydros Float Switch with Magnet Mount$34.09
HYDROS Float Switch with Magnetic Mount The HYDROS Magnetic Float Switch Sensor is a simple yet effective water level sensor...
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HYDROS Triple Optical Water Level Sensor$46.19
3 Water Level Sensors for Added Redundancy The HYDROS Triple Optical Water Level Sensor can be used for a variety...
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AutoAqua Smart Level Security$59.99
OUT OF STOCK
Smart Level Security by AutoAqua prevents aquariums from overflowing or equipment from running dry. Magnetically coupled optical sensor mounts up...
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XpAqua Duetto V2 Dual-Sensor Auto Top Off (ATO)$139.99
World’s Smallest Dual-Sensor Aquarium Auto Top Off Features: NEW! Controller programming & circuitry for added system protection NEW! Improved...
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Tunze 12v AC/DC Adapter$29.99
Replacement Tunze 12v AC/DC Adapter for Turbelle nanostream 6040, Osmolator nano 3152, Osmolator 3155, TUNZE LED eco chic 8811 and...
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Tunze Osmolator Replacement Metering Pump 5000.02$34.79
Replacement dosing pump with low voltage 3-12 V DC for Osmolator®, power with 4 mm (.2") hose at 12 V:...
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XpAqua RO/DI Flood Guardian$69.99
OUT OF STOCK
Smart ASOV is a unique electronic float valve kit for all kinds of reservoir. Never worry about forgetting to turn...
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Red Sea Replacement ReefATO+ Reef Sensor V2$59.99
Fits ReefATO+ Red Sea Replacement ReefATO+ Reef Sensor V2
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Seachem Bottle Adapter Sm - 24mm$3.86
Bottle Adapters Doser Tubing-to-Bottle adapter plugs Seamlessly connect dosing pump tubing to supplement bottles Seachem Bottle Adapter Plugs come...
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Seachem Bottle Adapter Md - 28mm$3.94
Bottle Adapters Doser Tubing-to-Bottle adapter plugs Seamlessly connect dosing pump tubing to supplement bottles Seachem Bottle Adapter Plugs come...
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Simplicity Dosing Tube Holder$14.95
Dosing Tube Holder Fits aquariums and sumps with a maximum thickness of 1.25 in., including rim Secures flexible tubing...
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Simplicity Modular Dosing Container$34.95
Modular Dosing Container Perfect Dosing Partner Organize your dosing solutions, top off your water or other solutions and keep your...
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Red Sea ReefDose Tubes 4 x 3m(10’) Blue -Green$17.25
Red Sea ReefDose Tubes 4 x 3m(10’) Blue -Green
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Tunze Osmolator Nano 3152 *Brand New Previous Version Model*$89.99 $114.99
TUNZE Osmolator nano Osmolator nano For small aquariums, a stable osmotic balance is important, because they are particularly sensitive to...
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Tunze Multi Tube Holder$14.99
OUT OF STOCK
Four hose holders / mounting clamps for Osmolator®, Osmolator® nano and other fastening solutions. For hose diameters from 6 to...
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Simplicity 5 Gallon Easy-Fill ATO Reservoir$139.95
Elevate Your Top-off Routine Simplifies Maintenance This first-of-its-kind ATO Reservoir features a wide-mouth lid that converts to a funnel...
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Red Sea ReefATO+ System$225.00
Smart. Safe. Quiet. The ReefATO+ is designed to maintain a stable salinity and water volume in a reef aquarium by...
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Red Sea ReefDose Accessory Kit Red-Yellow$37.95
Deluxe 4-color tube kit Everything required to connect a dosing pump in one convenient kit. Available in 2 color versions...
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Red Sea ReefDose Accessory Kit Blue -Green$37.95
Deluxe 4-color tube kit Everything required to connect a dosing pump in one convenient kit. Available in 2 color versions...
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Simplicity Heavy-Duty Silicone Dosing Pump Tubing - Red - 10 Feet$5.95
Simplicity Heavy-Duty Silicone Dosing Pump Tubing - Red - 10 Feet Stays flexible and resists cracking. Available in 3 vibrant...
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Coralvue HYDROS DC Micro Pump$28.59
CoralVue HYDROS DC Micro Pump With a HYDROS DC Micro Pump and a HYDROS Optical Water Level Sensor (or Float...
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Simplicity 6L Dosing Container 3 x 2L$75.95
OUT OF STOCK
This container is perfect for keeping your solutions organized, and your sump area neat and clean. Each chamber of the...
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JBJ Auto Top Off Replacement Float Sensor$30.00
OUT OF STOCK
Replacement Float Sensor for the JBJ Auto Top Off Unit.
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Tunze Osmolator Universal 3155 Auto Top Off - FACTORY REFURBISHED$114.99 $229.99
FACTORY REFURBISHED - SAVE 50% - 60 DAY LIMITED FACTORY WARRANTY. Any product we receive back where customer claims is...
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Eshopps H20 5 - 5 Gallon Auto Top Off Reservoir Tank$159.98
OUT OF STOCK
Simple and essential tool for holding water for topping off your display tank over extended period of time. Basic key...
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Redsea ReefCan 18L (5 gallon)$79.00
The ReefCan 18 and ReefCan 40 can supply the ATO of a 50-gal or 130-gal tank with enough RO water...
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AutoAqua Smart Auto Water Changer Lite$199.99
Innovative 2 in 1 Auto-Top-Off and Auto-Water-Change system achieves the aims of automatic tank maintenance. With precise and smooth DC...
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Neptune ATK v2 - Automatic Top-Off Kit$269.99
No More Manual Topping Off Leave Home for Days without Worry Stop Lugging Buckets and Jugs Maintain Consistent Salinity Levels...
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IceCap Magnetic Mount Float Valve$38.49
IceCap Magnetic Float Valve IceCap Magnetic Mount Float Valve comes with universal tubing retainer and tubing
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Bashsea Signature Series 10 Gallon ATO Container - WHITE$199.00
OUT OF STOCK
Bashsea Signature Series 10 Gallon ATO Container - WHITE color series Dimension: 10 x 15 x 16"
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XpAqua Duetto V2 Dual-Sensor Auto Top Off (ATO) - OPEN BOX RETURN$118.99 $139.99
OPEN BOX RETURN- SAVE 15% World’s Smallest Dual-Sensor Aquarium Auto Top Off Features: NEW! Controller programming & circuitry...
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Tunze Osmolator 3 Nano- OPEN BOX RETURN$119.99 $149.99
OPEN BOX RETURN- SAVE 20% The TUNZE® Osmolator 3 nano is a simple and safe device with just one...
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XpAqua RO/DI Flood Guardian- OPEN BOX RETURN$59.49 $69.99
OUT OF STOCK
OPEN BOX RETURN- Save 15% Smart ASOV is a unique electronic float valve kit for all kinds of reservoir....
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AUTOAQUA AQUA Lifter Pump - High Pressure$59.99
AQUA Lifter Pump High Pressure (Brushless) - Not a standalone unit. Requires an Autoaqua unit to run. Model: LP-1800...
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Eshopps Dosemate 3 - Dosing Container 3x2 L$134.98
DOSEMATE will complete your auto-dosing needs by securely holding your dosing minerals, nutrients, and other solution to make sure a...
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Simplicity 10 Gallon Easy-Fill ATO Reservoir$199.95
Elevate Your Top-off Routine Simplifies Maintenance This first-of-its-kind ATO Reservoir features a wide-mouth lid that converts to a funnel...
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Redsea ReefCan 40L (10 gallon)$110.00
The ReefCan 18 and ReefCan 40 can supply the ATO of a 50-gal or 130-gal tank with enough RO water...
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Tunze Turbelle High Jet Replacement Osmolator Pump$84.99
The Turbelle High Jet is a replacement dosing pump with safety extra low voltage 12 V DC for Osmolator nano...
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Red Sea ReefATO+ Upgrade Kit (for existing REEFER aquarium owners)$200.00
Upgrade kit will not include magnet mount. It is meant to be installed where the ato float switch is installed...
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Koller Products Aqua Lifter Dosing Pump$39.99
Aqua Lift is ideal for pumping small amounts of water from one location to the next - up to a...
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AutoAqua Smart ATO Lifter$99.99 $149.99
Premium Performance and Excellent Auto-Top-Off System The AutoAqua Smart ATO Lifter offers powerful performance and excellent auto-top-off functionality, with a...
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Simplicity Heavy-Duty Silicone Dosing Pump Tubing - Yellow - 25 Feet$12.95
Simplicity Heavy-Duty Silicone Dosing Pump Tubing - Yellow - 25 Feet Stays flexible and resists cracking. Available in 3 vibrant...
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Simplicity Heavy-Duty Silicone Dosing Pump Tubing - Green - 25 Feet$12.95
Simplicity Heavy-Duty Silicone Dosing Pump Tubing - Green - 25 Feet Stays flexible and resists cracking. Available in 3 vibrant...