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JBJ ATO Automatic Top Off System Water Level Controller

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$79.99 $137.95
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Tired of lifting heavy buckets to refill sumps or tanks due to evaporation?

There is finally a professional grade product that automates refilling evaporated water. The All-New A.T.O. (Automatic Top Off) device is the most advanced water level controller system on the market. Lifting heavy buckets and spilling water is now a thing of the past. Maintaining stable salinity and specific gravity are no longer a problem since the A.T.O. will refill as soon as the water level drops. The A.T.O. will keep your reef tank parameters consistent, ensuring an optimal environment for your tank inhabitants.

Advanced Features

Float Sensors
The A.T.O. is equipped with (2) float sensors that activate within seconds when your water level drops and automatically refills your sump or tank until it reaches your desired set point. Each float sensor has been designed with an exterior guard preventing snails & hermit crabs from attaching to the sensors.

Electronic Controller Module
Our state-of-the-art electronic controller allows for (2) modes of operation with a total of (3) different set up scenarios, allowing you more choices for installation for your unique set up. Our compact controller also incorporates a visible LED panel + our innovative Audible Signal alerts when in operation mode.

Linkable Brackets
Your professional kit includes commercial grade "Linkable Brackets" that can easily be adjusted to meet your height requirements, and securely positions your float sensors. Many competing brands use inferior suction cups that are temporary that can lead to disastrous water spillage.

Pump Safety Protection
The A.T.O. automatically stops power to your return pump in you reservoir, in the event that your reservoir is low on water. This safety feature prevents pumps from running dry and failing.

Specifications:

  • Item: Water Level Controller System
  • Model: A.T.O.
  • Purpose: To automatically replenish water lost through evaporation
  • Power Supply for Pump Capacity: 2 Amps
  • Dimensions (L x W x H): 1.5" x 2.75" x 4"
  • Weight: 2 lbs
  • Water Pump: (Not Included)
Q: How large of a pump can I plug into the A.T.O.?
A: The A.T.O. receptacle will handle pumps up to 2 amp capacity.

Q: Can the Audible Alert be turned off?
A: Yes, it can be turned off if the "Speaker Buzzer" is removed from the circuit board.

Q: Why does my A.T.O. automatically shut off after a few minutes of operation even though the water level has not reached the float sensor?
A: All A.T.O. Controllers have a factory "Float Fail-Safe" duration time period of 3 minutes and 45 seconds of operation before power to the pump is turned off. The Pump LED will glow but power to the pump will not be turned on. This feature was designed to act as a safety mechanism in the unlikely event the float sensor(s) failed or if something was to get stuck in between the sensor(s). You will have to reset the float sensor(s) to restart the controller.

Q: Can I adjust the "Float Fail-Safe" duration time period?
A: Yes, the duration time can be extended to 14 minutes of operation. (Please see instructions below on adjustment.)


Product Manuals & Documentation

JBJ ATO Automatic Top Off System Water Level Controller

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

JBJ is a top-of-mind brand name in freshwater and saltwater aquarium supplies. The company is committed to innovation and manufacturing only the absolute highest quality equipment. JBJ’s philosophy is "to create products that provide extra value" to hobbyists. JBJ produces hundreds of aquarium products including lights, filters, heaters, UV sterilizers, wavemakers and top-off systems. The company is best known for their affordable line of Arctica chillers and the best-selling Nano Cube aquarium series. We carry the gamut of JBJ products and accessories and are happy to provide you free technical support while you’re setting up your new equipment.

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Overall, others give this:

120 Reviewers (51%) would recommend this

Overall Rating:

5.0  Star
 68
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 11
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“Goes on and on”
5.0

Owned one for over 10 years and never failed. On top of that only used a 1 float design not two.

  • 1
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“after a few years stop working”
0.5

at the begining works great, then one day it doesn`t turn on again, one day i opened to discover that some humidity has damage the Electronic Circuit Board and now i have to refill water manually. it is too expensive for the poor construction that it has. to cost 79,99 at least must have a good wa...Read More

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“Excellent”
4.5

This is a great ATO. I wish I would have done it along time ago. I used to pour water into the tank that is 4 feet tall every morning from evaporation. Now I pour water into a 10 gal. tank on the floor every 10 days or so. I refer this ATO to my friends and folks at the fish stores, secretly of cour...Read More

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“Great until stopped working”
3.0

This is a great design and worked very well for about a year. Then one day it stopped working entirely :( Not sure if I want to purchase the same unit or try another that might be more reliable

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“JBJ ATO System”
5.0

This is the second JBJ ATO system that I am purchasing. The first one last 8 years and worked flawlessly. I think the microprocessor unit finally stopped working. It's so simple and very reliable. When you have a stocked reef tank, you only want simple and reliable components!!

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“great addition to my reef”
5.0

This is a top notch product. I hate purchasing things for my reef as the current setup has served me well for 10 years. As everyone else I bought every bell and whistle I was told to and wasted so much money. My last ato was an old reef dose pump that worked like a champ for 10 plus years and I was ...Read More

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“Works good most of the time”
3.5

This is one of the most useful pieces of equipment I have purchased for my system. I love not having to add water manually daily or twice a day. My one complaint is that sometimes it will allow too much water I evaporate before turning on and it causes the pump to run for a long period of time witho...Read More

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Overall, others give this:

120 Reviewers (51%) would recommend this

Overall Rating:

5.0  Star
 68
4.5  Star
 5
4.0  Star
 21
3.5  Star
 4
3.0  Star
 7
2.5  Star
 1
2.0  Star
 0
1.5  Star
 1
1.0  Star
 11
0.5  Star
 2