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Aquarium ATO, Auto Top Off for Freshwater Saltwater Aquarium, Fish Tank Automatic Top Off System (ATO 100)

Free shipping on orders over $29.99

$36.59

$ 16 .99 $16.99

In Stock

1.Style:Ato A2


About this item

  • 【Smart ATO】Compact design, upgraded safer optical sensor, no matter how long you are away, ATO system can ensure that your tank is refilled in time.
  • 【Top Off System】The unit comes with a micro whisper pump, small but powerful, with a maximum head of 3 meters and a maximum flow rate of 70 GPH.
  • 【Easy to Use】Anti-overfill function can avoid flooding your fish tank, more reliable.
  • 【Patent Design】The patented design of the tube holder can not only fix the re-filling tube but also can be used to hold the air tube.
  • MostAqua offer 90 Days warranty. If you are not happy with our Aquarium ATO or receive a defective unit, we will propose you satisfactory resolution. Please feel free to contact with us if any questions or concerns.



4.0 out of 5 stars Date First Available March 21, 2023 Item Package Dimensions L x W x H 6.26 x 6.26 x 2.44 inches Item Weight 0.82 Pounds Brand Name MostAqua Target Audience Keyword fish, Aquarium, Fish Directions PLEASE read through the manual before using. Warranty Description 1 Year Manufacturer Model Name Aquarium ATO Color Clear Material Acrylonitrile Butadiene Styrene (ABS) Age Range Description Adult Manufacturer MostAqua Style ATO 100 Included Components ATO Controller, Water Pump, Power Adapter, Tubing, Tube Holder, User Manual Specific Uses for Product Indoor

Product Description

aquarium ato

Aquarium ATO Series

The ATO system automatically maintains the water level in the aquarium, ensuring a stable and healthy environment for aquatic life.

aquarium auto top off

HOW to choose an auto top off system?

  • Choose a brand-name supplier with reliable quality and guaranteed after-sales service.
  • Refer to the user/buyer's reviews and concerns.
  • Select the right ATO system according to your needs and product specification parameters.

WHY need auto top off system?

When you're away on vacation or don't have much time to refill water manually, ATO can do the job for you, saving time and water.

MostAqua ATO Series

  • MAT100 - Single-Sensor ATO

Suitable for household freshwater or saltwater aquarium.

  • MAT200 - Dual-Sensor ATO

Suitable for aquarium stores or large aquariums in complex environments.


Michael
Reviewed in the United States on February 8, 2025
So far so good it is operating on a 15 gallon breeder tank saltwater helps stop the salinity spikes which is awesome.
Eric C.
Reviewed in the United States on February 23, 2025
I have tried electronic float switches on relays and gravity floatswitches that work without power and have the water damage to prove it. This item is the only method I've found for having a foolproof topoff system that does not fail. The alarms for pump running longer than average is nice sometimes but sometimes annoying depending on your use case. The included hosing and pump just seal the deal for this being the best aquarium item for automation. I wish the sensor was able to be placed a little closer to the rim but because it can only be oriented with the wire coming out of the top it can't sit flush, but I've made due for many months and still appreciate the work this system puts in for me.
Customer
Reviewed in the United States on February 23, 2025
Purchased this to replace a pump that failed from a name brand ATO, sumpless version, after looking up the pump number. Just took out the old and plugged the new one in, has been working with no issues. Definitely thinking about picking up a extra to have on hand incase of another pump fail. As I have a saltwater reef tank, and not keeping that constant salinity is make or break.I also picked up one of there diamond ATO for a 2nd 10 gallon tank. So far has been working great and has a very similar design to the name brand ATO that is ×3 to×4 the cost.
rifaat
Reviewed in Saudi Arabia on February 11, 2025
Perfect and I like it, you can leave a home for a while with out figure out about your aquarium
TheOtherDan
Reviewed in Australia on January 8, 2025
The product works well but comes with a foreign power plug meaning I had to go out and buy an adaptor to use it in Australia. This fact should really be noted somewhere noticeable on the listing and adds to the expense of the item.
Emilie Mecklenborg
Reviewed in the United States on January 4, 2025
I have five saltwater tanks, one on each. They work great no issues. Would definitely buy again
TasRuki
Reviewed in the United States on January 28, 2025
Worked for 5 minutes now nothing.
MyCatRocks
Reviewed in the United States on September 25, 2024
I'm sorry, these are just garbage. I ordered a total of three of these all within about the last 10 months, and none of them worked out for me. One that I ordered was missing the magnet that holds the sensor to the tank out of the box. One just flashes blue when the water level drops low, but the pump never comes on. I have cleaned the sensor and the pump, and even swapped the pump entirely, but the unit doesn't pump, it just flashes blue.And the last one, and maybe most importantly, this one very reliably will come on when the water level drops low, but will at random times inexplicably keeps pumping and pumping water until it depletes my ATO reservoir and floods my saltwater tank. This rapidly lowers the salinity of the aquarium to dangerous levels where I've had livestock die, and then saltwater from the tank is forced out, making a huge, huge mess. This has happen now three or four times at least in my short time having this ATO.I'm an simply sick of coming home to floods!!!I reached out via Amazon to the seller for help or for a possible warranty exchange, and I heard nothing in return but crickets. I will no longer trust these budget ATO's, I'll spend the extra on a name brand unit.
Mo
Reviewed in the United Arab Emirates on September 14, 2024
Works perfectly!! Quite easy to install except inserting the tube to the pump - just inserted back of the tooth brush to it for few secs, so once it expanded a bit I could fix it to the pump easily.Tested only 2 days, so far so good.However, the box shows 2 sensors which is quite confusing as I thought it’s the upgraded model with dual relay so I assumed I’m getting 2 level sensors.
Joe Hassan
Reviewed in the United States on September 11, 2024
The sensors require a Reverse Flow Control valve, as the water fill has a tendency to reverse its flow. of water.
Patrick
Reviewed in the United States on December 30, 2024
Great little ATO for the money, I love the alarm and light feature.
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