10 Best Auto Top Off System Of 2022

The best auto top off system may be what you’re looking for. Overwhelmed by too many choices? You are in the right place if that describes your circumstance. This is the auto top off system ultimate buying guide.

We are aware of the hassle it can be to sift through countless reviews when faced with a plethora of choices. Therefore, set aside all your concerns, read this comprehensive guide, and make a worry-free purchase decision.

#List Of The Best auto top off system : Expert Choice!

Top 10 Best auto top off system In The Market

1. Kamoer New ATO One 2 SE Smart auto top Off System Silent Water Replenisher Water Level Controller for Fish Tank Water Tank Aquarium

Features :

  • Kamoer’s new upgraded ATO one 2 se automatic water refill is a great addition to your home fish tank! It has a water refill timeout alarm function to prevent water level overflow due to sensor failure.
  • This ATO is equipped with: S1: Optical level sensor to identify water refill, S2(not included,optional sensor): Refill bucket level sensor, S3: Optical level sensor to prevent overflow, DC12V: power input, Pump: connect to refill pump or refill solenoid valve, Power: power indicator (green), Filling: refill indicator (blue), Alarm: alarm indicator (red). Power: power indicator (green), Filling: fill indicator (blue), Alarm: alarm indicator (red)
  • In normal daily use, S3 sensor does not work, S3 is installed in the high used to prevent overflow, to play a role of protection. S1 is is to detect the lowest water level sensor, used to identify the refill water. S2 is the refill bucket level sensor, to prevent the refill bucket shortage of water.
  • Compared to the old ATO, we have upgraded two parts of this ATO. 1. replaced the original submersible pump with a new anti-dry submersible pump. 2. replaced the new sensor, the new ATO uses a more accurate optical level sensor more responsive, which can effectively reduce the generation of faults.
  • Please install the sensor correctly (there is a picture illustration in the main picture), ATO may malfunction will not work. The height difference between the refill bucket and the bottom/master cylinder should not exceed 1.5 meters, and the refill bucket level should not be higher than the bottom/master cylinder level as much as possible .

2. Clscea Aquarium Auto Top Off System Water Filler Compensator Blue

Features :

  • Great for nano tanks, use with the principle of differential pressure to automatically refill water, simple and practical. You need to prepare 0.5-1.5L (16.9-50.7 FL Oz) plastic water bottles such as EVAIN / Coca Cola / Fiji yourself.
  • Built-in noise reduction device can effectively reduce noise. (Note: not completely silent).
  • Screw-free, no damage to the tanks. Made of corrosion-resistant ABS material, which is also usable in saltwater. The length of the tubing (manually cut) allows you to adjust the water level.
  • Suitable for tanks with 3-10mm /0.12-0.39in wall thickness. Note: Incompatible with rimmed tanks and curved fish tanks; and tanks with 3mm/0.12in or 5mm/0.2in thickness wall need to use the self-adhesive gasket (included).
  • A reliable gadget during business trips or travel. Compatible with fish tank, tortoise tank, planted aquarium, saltwater aquarium, etc. For tanks longer than 40cm/16inch, it is recommended to use 2 refillers together.

Additional Info :

Color Blue

3. ATO System, Smart ato System, Auto Top Off System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump,Water replenishment system, Smart ato System for fish tank

Features :

  • 💧💧【Simple, Complete, Smart Automatic Top Off System】 aquarium automatic water supply system, super easy installation and maintenance. Suitable for aquariums up to 5/8″(16mm) thick, durable PC material holder to prevent move, adjustable bracket on holder make different water levels possible.
  • 💧💧【Relay Control】 precise dual float water level sensor for overfilling protection. When the water goes below the minimum water level , the power will be activated, the pump automatically works, and cut off once the water level reach to maximum. The second float ball will work when the first float ball fails.It can effectively avoid the influence of wrong information and is more reliable than other sensors.
  • 💧💧【Siphon Break】 The siphon break is optional installation part. It is recommended that the water level of display tank be higher than the reservoir, and DON’T leave the end of the water supply pipe in the water, otherwise, it will siphon after the pump shuts off, if so the siphon break must be installed at the end of the water supply pipe.
  • 💧💧【Plug-and-Play with all parts included】 Everything you need is included, it will also come with a pump and a ETL listed power adapter. Safely keep sump water levels stable, no moving parts that can fail.
  • 💧💧【Widely Used】Suitable for all kinds of fish tanks, aquariums, sumps, etc. The range of water level from aqurium sump top is 0-17cm or 0-6.7″.Suitable for aquariums up to 5/8″(16mm) thick, save you a lot of time to enjoy your life. The Smart ATO Complete Kit will never make water overflow your tank, it is especially suitable for the sump with a lot of evaporation. 12 month warranty!

Additional Info :

Color Black

4. JEBAOJECOD Smart Aquarium Auto Top off Water Refiller System,Water Replenisher Water Level Controller for Fish Tank(Jebato-150) Black

Features :

  • JEBAO ato,smart aquarium automatic top off system,water level controller for fish tank,
  • With 42gph DC12Vquiet pump,5 ft max lift,silent water replenisher
  • 6.5ft soft tube with tube holder ,with siphon break and magnet mount sensor ,tank thickness up to 1/2″ (12mm)
  • Automatic water refill and quiet operation,suitable for salt water and fresh water
  • Use smart magnet mount optical sensor,LED light alert,

Additional Info :

Color Black
Item Dimensions
Height 1
Width 2
Length 2
Weight 1

5. MagTool Platinum Serial Optical Auto Top Off System(ATO) with Smart SPT Algorithm and Beep Alarm(MT-200)

Features :

  • Compact size. The dual optical sensors system monitors your tank water levels closely for over-fills. When the sensor sees water level at “LOW” position, it starts filling the tank immediately. The “HIGH” sensor provides real-time protection against over-fills. The platinum model uses advanced external optical which can detect the water level through the glass wall on the outside. There are no more loose cables inside the tank.
  • Smart algorithms. AFT (Anti-fluctuation Technology) and SPT (Single Pumping Time) working together in tandem to ensure the pump works in real-time to add the right amount of water. At the same time, SPT and QST working together to prevent overfill and dry run. Having these features, our pumps will last longer
  • Built-in LED indicator, smart button and alarm buzzer. equipped with a smart button, you can pause the ATO’s function temporarily when you perform maintenance on your tank. 3 different LED colors to indicate its working status. When errors happen, buzzer sets off alarms to remind you.
  • Accessories are included. Powerful magnet provides strong suction support even on 15mm thick glass wall. Hose holder allows you easily secure the tubing. Powerful 70gph water pump can lift water up to 2.5 M high. Device is easy to use. After finishing device initialization, you can forget about it. 
  • Attention! The optical sensor ONLY works on transparent glasses. If your tank is not transparent, you need to choose our basic model ATO-360. It is designed for both rimless and rimed tank. The device’s overall width is 1.2 inches long. The target water lever is between “LOW” and “HIGH” positions, so the target line must be 0.4 – 0.6 inches from the edge of the tank.

Additional Info :

Color Platinum

6. AutoAqua Smart ATO Lite SATO-260P Automatic Top Off System Water Filler Refiller Water Level Controller w/ Pump (SATO-260P)

Features :

  • The smallest ATO system currently available/Suitable for nano / medium aquariums
  • Extremely easy to install with integrated magnetic mount / No moving parts to fail
  • Dual-optical level sensor in one pack provides dual protection
  • QST (Quick Security Technology) provides real-time failsafe protection against failure
  • LED light alert / Everything needed is included

Additional Info :

Color Black

7. hygger Mini Intelligent Auto Top Off System with Controller Magnetic Mount Aquarium ATO Pump Water Refill Saltwater Reef Tank Supplies up to 60 Gallon

Features :

  • 【How does it Work】Automatic top off system with 2 optical sensors monitors and replenishes evaporated water each day. A great time and energy saver for saltwater tank fish keeper especially when you are not at home.
  • 【Fail-Safe Design】build in two set of sensors, hygger auto top off keeps track of the water line of aquarium/sump tank. ATO monitoring sensor which keep a constant watch on the water level in your tank, and when it drops below a certain level and the water pump will be activated to automatically refill the tank. While the external sensor monitors reservoir’s water level to ensure the water pump not running dry as a result of water drying out.
  • 【Overfill Protection】Use a top probe to sense the high water level, the ATO sensor alerts with flashing led light and beeping sound if there is any malfunctioning with the device itself, auto shut off the water pump when the water level exceeds the desired maximum top off level. It to be used in both marine and freshwater aquariums up to 60 gallon.
  • 【Enable Drain Out Water】 Comes with a mini DC-powered water pump and a soft hose which can effectively pumps water from bucket/jug with a head height of up to 2 meters. Vice versa. It can also drain dirty water out of the tank. Flow rate: 74gph.
  • 【Packing Include】 1 x ATO monitor sensor; 1 x external sensor; 1 x water pump; 1 x 5.9 ft soft hose; 1 x hose holder; 1 x user manual. A read-to-go kit out of box, it is easily installed via a magnetic mounting which can be used on tank glass up to 1/2” (12mm) thickness.

Additional Info :

Item Dimensions
Height 1.6
Width 1.4
Length 2

8. Auto Water Filler Controller Auto-top-Off System Water Level Controller Adjustable Float Valve Mounting for Aquarium Pet Supplies

Features :

  • This auto-top-off system is easy to install on to your aquarium sump
  • Float valve for manual adjustment, no other tool, no metal screws, no corrosion
  • Comes with a O-ring, can meet 16/12 water tube, don’t leak
  • It is suitable for the aquarium which is under 15mm thickness. The adjustable range of water level is 0.5-15cm
  • The bracket is made of high quality material, stable and heavy enough, not easily knocked

Additional Info :

Color White
Item Dimensions
Height 3.93700787
Width 3.93700787
Length 3.93700787

9. DIGITEN Auto Top Off System Aquarium ATO Water Filler System Smart ATO Refiller Fish Tank Automatic Water Level Controller Coral Reef Tank Automatic Top Off

Features :

  • 🐠【Easy to Install】The aquarium auto top off system is extremely to install and maintain. Easily install on terrarium with a wall thickness of no more than 5/8 inches (16 mm). The range from the top of the tank to the water level is 0-6.7 inches (0-17 cm). The durable PC material adjustable bracket can be fixed in the terrarium according to different water levels.
  • 🌿【Integrated Design Without Setting】Plug and play, easy operation. Anti-overflow protection design and will automatically cut off power when water level is too high.
  • 💧【Double Protection】Accurate dual-float water level sensor can provide over-filling protection. When the water level drops below the lowest water level, the power supply will be activated and the water pump will work automatically and shut down when the water level reaches the highest water level. When the first float fails, the second float will work.
  • 🐚【Relay Control】The controller of the ato system integrates a relay and a stable circuit to protect the water pump and the water level switch more effectively.
  • 🦐【Widely Applications】It is widely used in various aquariums, sump, fish tanks, coral reef tanks, etc. Rest assured your product is covered by one-year warranty.

Additional Info :

Color Black

10. SKEMIX Auto Top Off Water Filler Aquarium Mini ATO System Fish Tortoise Tank Water Level Controller No Wiring Float Valve

Features :

  • When you are on a business trip or traveling, use our water compensator to avoid water shortage in your fish tank, aquarium tank, tortoise tank, or other tanks.
  • Better than a float valve, no wiring or power required, takes less space.
  • Easy to use, practical and interesting. Just screw the compensator to a water bottle, then stick it to the tank.
  • When the water level drops to reveal the shorter tube, the water in the bottle automatically flows into the tank due to pressure difference.
  • Each compensator comes with 3 replaceable slots, suitable for 4 kinds of tank thickness: 4mm, 6mm, 8mm, and 10mm. For other thickness, you need to prepare extra gasket.

How to Choose the Best auto top off system: Things to Take into Account

Make sure you pick the appropriate auto top off system when you purchase a new one. You can choose the ideal auto top off system for your needs by following some general guidelines, even though many factors may influence your choice.

You might have learned about the auto top off system industry before developing an interest in auto top off system. Additionally, you might have gained knowledge about the [replace keyword’s] quality, its precise composition, its price, and how it stacks up against competing goods. What kind of purchase you make will depend on all of these variables. This piece offers advice on how to pick the top auto top off system.

It is never easy to choose the best auto top off system because there are so many variables. You can determine what kind of auto top off system you want to purchase and how much you should pay by asking a few general questions.

  1. Is the auto top off system constructed from sturdy materials?
  2. Is it long-lasting and robust?
  3. What is the price?
  4. Is the cost affordable?
  5. What type of guarantee does the vendor provide?
  6. Does this auto top off system have any extra features that might justify your purchase?

It’s crucial to confirm that auto top off system has a strong reputation for excellence. You don’t want to make a purchase that will malfunction a few days or weeks after you make it.

The best auto top off system should be chosen by taking into account a number of different factors. The following are some of the most crucial factors you need to take into account when selecting a product.


It’s crucial to pick a reasonable auto top off system. Before making a purchase, compare prices to find one that fits within your spending limit. Avoid being seduced by low prices as much as you can because they might not be trustworthy. Future repairs and replacements will probably cost more than they would have if you had initially purchased a more durable product.

Shopping around is the best way to find a good deal on a auto top off system. You can search for and compare prices from various retailers selling the same items online. This will make it easier for you to find a store that provides excellent value for your money.


The auto top off system features and whether they meet your needs are another crucial aspect. A model’s price increases with the number of features it has. Look for a straightforward model with just the essential features if you’re on a tight budget. Look for a model with more to offer if you have more money to spend and want a model with lots of features. Check out the auto top off system reviews if you’re looking for a straightforward model. Some models are frequently praised for having fewer features but still being simple to use and performing well.


Durability becomes even more crucial than price if you use your auto top off system frequently or in challenging circumstances because malfunctioning equipment can lead to additional damage or injuries. The quality of the build, the materials used in construction, and the design elements all affect durability. A robust model will result in less downtime.

In a perfect world, you would use a robust product that could withstand constant use. Choose a product made from high-quality materials if at all possible. By doing this, your auto top off system will last a long time even if you use it frequently.

Budget Your budget should be a major deciding factor when selecting auto top off system. If you have a limited budget, you should think about purchasing an inexpensive model rather than an expensive one that provides little advantage over less expensive models. Get one of those expensive models with lots of features and functions instead if money isn’t an issue for you, though!

Reputation of a brand

The reputation of the brand is the main factor to consider. A business with a long history and a stellar reputation is what you want to look for. They must be doing something right if they have been in business for so long and have established a solid reputation with clients. To find out what other people have said about them, visit their website or do an internet search.

Customer service

Look at how the business resolves customer issues to get a sense of your future auto top off system. There may be issues with this specific brand or model if there are numerous complaints about bad customer service on forums and social media platforms. If your comfort and convenience are important to you, it would be better to choose a different brand.

Customer feedback

Customer reviews are another crucial factor that shouldn’t be disregarded. It is worthwhile to read user reviews before making a purchase decision because people who have used auto top off system can share their experiences with other users. You can also find this information in the reviews if you have any questions about the features or specifications of the product!

Leave a Comment