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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).
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ReefBreeders Prism ATO Auto Top Off System
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ReefBreeders Prism ATO Auto Top Off System

ReefBreeders EXO ATO Auto Top Off System
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ReefBreeders EXO ATO Auto Top Off System

XP Aqua Duetto ATO Auto Top Off System

XP Aqua Duetto ATO Auto Top Off System

Kamoer X1 Micropump - Bluetooth Single Dosing Pump

Kamoer X1 Micropump - Bluetooth Single Dosing Pump

Neptune Optical Sensor w/ Magnetic Mount for Apex FMM

Neptune Optical Sensor w/ Magnetic Mount for Apex FMM

Neptune ATK V2 Auto Top Off Kit

Neptune ATK V2 Auto Top Off Kit

Neptune Systems PMUP v2 Practical Multipurpose Utility Pump

Neptune Systems PMUP v2 Practical Multipurpose Utility Pump

Tunze Osmolator Replacement Metering Pump

Tunze Osmolator Replacement Metering Pump

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

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

FX-STP Peristaltic WIFI Continuous Duty Dosing Pump - Kamoer

FX-STP Peristaltic WIFI Continuous Duty Dosing Pump - Kamoer

X1 PRO WiFi Dosing Pump - Kamoer

X1 PRO WiFi Dosing Pump - Kamoer

JBJ Nano ATO Auto Top Off System with Pump

JBJ Nano ATO Auto Top Off System with Pump

HydroFill Auto Top Off ATO Controller - Innovative Marine

HydroFill Auto Top Off ATO Controller - Innovative Marine

Kamoer F4 PRO WiFi Dosing Pump (4 Channel)

Kamoer F4 PRO WiFi Dosing Pump (4 Channel)

IceCap Auto Top Off ATO

IceCap Auto Top Off ATO

Innovative Marine HydroFill Ti ATO Return Pump

Innovative Marine HydroFill Ti ATO Return Pump

Innovative Marine HydroFill Ti Universal Auto Top Off ATO Return Bracket

Innovative Marine HydroFill Ti Universal Auto Top Off ATO Return Bracket

Seachem Hydro Tote Collapsible Water Jug

Seachem Hydro Tote Collapsible Water Jug

XP Aqua Ultimate ATO - Complete 4-Sensor Aquarium Auto-Top-Off System
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XP Aqua Ultimate ATO - Complete 4-Sensor Aquarium Auto-Top-Off System

Tom Aquatics Aqua Lifter Holder

Tom Aquatics Aqua Lifter Holder

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