Auto Top Off

(11 items)

Ensure the stability and health of your reef tank with our premium selection of automatic top off systems. Maintaining consistent water levels is crucial in a reef tank, and our auto top off solutions are designed to take the hassle out of this critical task. These systems automatically replenish evaporated water, helping to keep your salinity levels stable and your marine life thriving.

Whether you have a large reef setup or a smaller nano tank, we offer a range of auto top off pumps that cater to different aquarium sizes and needs. From the precision of the HYDROS Triple Optical ATO Kit to the simplicity of the ATO EZ Auto Top Off System by IceCap, our selection ensures that you can find the perfect auto top off solution for your marine environment.

Explore our collection of auto top off systems and keep your aquarium’s water levels in check effortlessly.

Top Auto Top Off Products

A table comparing the facets of 4 items
Facet	HYDROS Triple Optical ATO Kit - Hydros View details	ATO EZ Auto Top Off System - IceCap View details	Osmolator Nano 3152 Auto Top Off - Tunze View details	3-in-1 ReefATO + Auto Top Off System - Red Sea View details
Price
Price	$83⁹⁹	$94⁹⁹	$114⁹⁹	$214⁹⁹
Features
Features	Eliminate the need for a separate, costly auto top-off system by transforming your HYDROS device into a complete ATO solution. The HYDROS Auto Top-Off Kit includes a Triple Water Level Sensor and a DC Micro Pump, providing an easy, reliable, and streamlined approach to maintaining optimal water levels in your aquarium. Triple Water Level Sensor: Magnetic, compact, and free from moving parts; attaches securely to aquarium surfaces up to ½” thick. DC Micro Pump: Compact yet powerful, with a 6' max head and 50 GPH flow rate; connects directly to HYDROS Control X2 or X4 Drive Port. Complete Kit: Includes Hang-On Tubing Mount, 80" Tubing, and a Siphon Break for secure and efficient setup. No Extra Power Needed: Both sensor and pump are powered directly by your HYDROS controller, reducing wire clutter.	The IceCap ATO EZ System is a plug-and-play auto top-off solution designed for ease of use and added safety. With three optical sensors and a compact, magnetic mounting system, this ATO offers reliable, real-time overflow protection and a simple setup for aquarium owners looking to automate water level management. Fail-Safe Design: Equipped with three optical sensors for redundancy, ensuring consistent water levels and overflow prevention. Easy Installation: Magnetic sensor mount and simple setup with provided tubing and accessories. Reliable Pump: Durable DC water pump with 50 GPH flow rate and 6' max head height. Visual Status Indicators: Blue and red indicator lights allow for easy monitoring of water level and pump status at a glance. Specifications: Pump Dimensions: 1.5" x 1.5" x 1.5" Power: 5W, tubing size: ID 6.5mm / OD 8mm	The Osmolator Nano 3152 is the compact version of Tunze’s renowned Osmolator ATO system, crafted specifically for smaller aquariums (50 gallons and under). With a processor-based anti-overfill feature and a slim, efficient design, this system brings reliable and safe water level management to nano tanks. Anti-Overfill System: Automatically shuts off the pump if the target water level isn't reached within 5 minutes. Compact and Reliable: Ideal for aquariums up to 50 gallons, with all essential components included. Easy Installation: Magnetic holder for secure sensor mounting on surfaces up to 10mm thick. Specifications: Max Head Height: 7.0 ft Tubing Diameter: 7mm OD \| 4mm ID Tubing Length: 2 meters	The ReefATO+ is more than an auto top-off system; it's an all-in-one solution for precise water level and temperature control, leak detection, and intelligent monitoring. Seamlessly integrating with the ReefBeat App, this ATO system provides real-time insights, automated controls, and peace of mind for reef enthusiasts. Reliable ATO System: Dual sensors with backup for secure, accurate water level management. Temperature Monitoring: Built-in sensor with ±0.1° accuracy, with alerts and logs available in the ReefBeat App. Leak Detection: Titanium probes for saltwater and RO/DI, with instant notifications and shutoff. Quiet Variable Flow Pump: Compact 12v DC pump with flow control, max head height of 8 ft, and auto-shutdown on faults. Smart Controller Integration: Monitor water level, fill logs, and temperature records over 28 days via the ReefBeat App. Specifications: Pump Flow Rate: Max 75 GPH, Auto-adjusted to ~18 GPH Tubing: 10 ft silicone, ID 5mm Magnetic Mount for sensors on up to ½” glass

Dive Deeper: Info & Tips for Auto Top Off Systems

An automatic top off system is a vital tool for any reef tank enthusiast, ensuring that your tank's water levels remain stable even as evaporation occurs. This stability is key to maintaining proper salinity levels, which is essential for the health of your marine life.

When selecting an auto top off system, consider the size of your tank and the evaporation rate. Larger tanks or tanks with high evaporation rates may require a more robust system, such as the ATK V2 Auto Top Off Kit by Neptune Systems that is fully controllable and provides insightful data into your tank’s evaporation rate.
For nano tanks, choose a compact system like the Osmolator Nano 3152 Auto Top Off by Tunze, which is designed specifically to meet the needs of smaller setups.
Ensure your auto top off pump is placed in a location where it can accurately monitor water levels. Most systems use sensors to detect when water levels drop, triggering the pump to add more water automatically.

Expert Advice

Choosing the Right Auto Top Off System: The right auto top off system depends on your tank size and the complexity of your setup. Systems like the HYDROS Triple Optical ATO Kit offer advanced features with multiple sensors for greater accuracy, while simpler systems may be sufficient for smaller tanks.
Installation Tips: Install your auto top off pump in your sump or directly into your reservoir. Make sure the sensor is placed at the correct water level to ensure the system activates at the right time.
Maintenance Advice: Regularly check your auto top off system to ensure it’s functioning correctly. Clean the sensors and pumps as needed to prevent algae buildup or debris from affecting performance.

Installation & Maintenance Tips

Installing Your Auto Top Off System: To install your automatic top off system, follow the manufacturer’s instructions carefully. Typically, the sensor should be placed in the tank or sump at the desired water level, with the pump connected to a reservoir of freshwater.
Routine Maintenance: Keep your auto top off system in optimal condition by cleaning the sensors and pump regularly. This prevents malfunctions and ensures that your system operates smoothly.
Optimizing Performance: Ensure your auto top off reservoir is always filled with fresh, purified water. This helps maintain the salinity balance in your reef tank and prevents fluctuations that could harm your marine life.

Auto Top Off FAQ

Why do I need an auto top off system for my reef tank?

An auto top off system is essential for maintaining consistent water levels in your reef tank, which is crucial for keeping salinity levels stable and ensuring your water parameters remain in equilibrium.

How does an auto top off system work?

An automatic top off system uses sensors to monitor the water level in your tank or sump. When the water level drops due to evaporation, the system automatically pumps in fresh water from a reservoir to restore the correct level.

Can I use an auto top off system in a nano tank?

Yes, there are auto top off systems specifically designed for nano tanks, such as the Osmolator Nano 3152 by Tunze. These systems are compact and tailored to meet the needs of smaller tanks.

How do I maintain my auto top off system?

Regular maintenance includes cleaning the sensors and pump to prevent debris and algae buildup. Ensuring the freshwater reservoir is always filled will keep your auto top off pump functioning correctly.

Where can I buy a reliable auto top off system?

You can explore our selection of auto top off systems right here on our website, offering a variety of options for tanks of all sizes and complexities.