Dosing Pumps and Auto Top Offs

What is an ATO? An aquarium Auto Top-Off system measures water levels in the aquarium or sump. When the automatic top-off sensor detects a drop in water level, a pump sends fresh water from an auto top-off reservoir into the tank.

The best auto top off system, like the Tunze Osmolator, will have multiple sensors and fail safes to prevent flooding. A good nano auto top off, like the AutoAqua Smart ATO micro, has all this in a tiny form factor that fits in an all-in-one nano. A kalkwasser reactor can be attached to an ATO to replenish Ca and Alk in a reef aquarium.

An aquarium doser, like a peristaltic dosing pump, delivers small amounts of fluid in timed intervals. The timer is tuned to deliver elements at the same rate they are depleted. A reef doser setup will often have at least three pumps (for Ca, Alk, Mg).
82 Results
XP Aqua Duetto ATO Auto Top Off System
17%
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XP Aqua Duetto ATO Auto Top Off System

Neptune DOS - Auto Water Change and Dosing System
10%
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Neptune DOS - Auto Water Change and Dosing System

Kamoer X1 Micropump - Bluetooth Single Dosing Pump
20%
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Kamoer X1 Micropump - Bluetooth Single Dosing Pump

Tunze Osmolator 3155 ATO Auto Top Off System
20%
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Tunze Osmolator 3155 ATO Auto Top Off System

Tunze Osmolator Nano 3152 ATO Auto Top Off System
15%
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Tunze Osmolator Nano 3152 ATO Auto Top Off System

Neptune Systems DDR - DOS Dual Reservoir
10%
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Neptune Systems DDR - DOS Dual Reservoir

Neptune Systems OS-1-M Optical Level Sensor with Magnetic Mount
10%
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Neptune Systems OS-1-M Optical Level Sensor with Magnetic Mount

AquaMaxx DTH-1 Pro Magnetic Dosing Tube Holder
15%
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AquaMaxx DTH-1 Pro Magnetic Dosing Tube Holder

Neptune ATK V2 Auto Top Off Kit
10%
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Neptune ATK V2 Auto Top Off Kit

Simplicity Dosing Container - 3 x 2L Compartments (6L Total)

Simplicity Dosing Container - 3 x 2L Compartments (6L Total)

Neptune Systems PMUP v2 Practical Multipurpose Utility Pump
10%
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Neptune Systems PMUP v2 Practical Multipurpose Utility Pump

Bubble Magus Tube Holder
20%
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Bubble Magus Tube Holder

AquaMaxx Dosing Container DC-1
15%
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AquaMaxx Dosing Container DC-1

Tunze Osmolator Replacement Metering Pump
15%
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Tunze Osmolator Replacement Metering Pump

Innovative Marine AUQA Gadget HydroFill Ti Auto Top Off ATO Reservoir - 5 Gallon
10%
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Innovative Marine AUQA Gadget HydroFill Ti Auto Top Off ATO Reservoir - 5 Gallon

Tunze Osmolator Storage Container 27L (7.1 Gal) ATO Reservoir
15%
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Tunze Osmolator Storage Container 27L (7.1 Gal) ATO Reservoir

IceCap Auto Top Off ATO
10%
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IceCap Auto Top Off ATO

Innovative Marine HydroFill Ti Auto Top Off ATO Controller
10%
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Innovative Marine HydroFill Ti Auto Top Off ATO Controller

JBJ ATO Automatic Top Off System Water Level Controller
15%
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JBJ ATO Automatic Top Off System Water Level Controller

JBJ Automatic Top Off Nano ATO with Pump
15%
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JBJ Automatic Top Off Nano ATO with Pump

Kamoer F4 PRO Wifi 4 Channel Doser
20%
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Kamoer F4 PRO Wifi 4 Channel Doser

Innovative Marine HydroFill Ti ATO Return Pump
10%
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Innovative Marine HydroFill Ti ATO Return Pump

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