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JBJ ATO Automatic Top Off System Water Level Controller

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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)


Frequently Asked Questions (FAQs)

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.)

Specifications

 

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
  • Pump: (Not Included)

FAQ

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 2amp 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.)

How to Adjust the "Float Fail-Safe" Time Duration

Step1:
Unscrew back panel off of controller (4) total screws Adjusting Dial is located towards the top in "Blue Color"
 JBJ A.T.O  Adjust Float Fail-Safe Time Duration Step 1a JBJ A.T.O. Adjust Float Fail-Safe Time Duration Step 1b
Step2:
Use a Phillips screwdriver and turn the dial COUNTER CLOCKWISE until it locks. This setting will give a operation mode time of approximately 14 minutes or until correct water level is reached.

JBJ A.T.O  Adjust Float Fail-Safe Time Duration Step 2



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.


Warranty

6 month manufacturer warranty

127 Reviews

MAURICIO CANON from MIAMI, FL UNITED STATES

04/08/2016

Experience Level: Intermediate

after a few years stop working

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 water and humidity resistance but not.

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MARK RAMSEY from Albuquerque, NM UNITED STATES

01/28/2016

Experience Level: Intermediate

Excellent

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 course.

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BRIAN HANCZ from Boulder, CO UNITED STATES

01/25/2016

Experience Level: Intermediate

Great until stopped working

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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GREG from SLIDELL, LA UNITED STATES

12/15/2015

Experience Level: Intermediate

JBJ ATO System

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!!

1 out of 1 found this review helpful

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JOHN MARZICH from ARROYO GRANDE, CA UNITED STATE

06/08/2014

Experience Level: Intermediate

Have had this for 8-10 years

Only use one sensor and it has never failed. Even times out if you run dry on the refill tank or it takes too long to refill or too much water usage on the refill. Great unit!

3 out of 3 found this review helpful

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BRIAN ARNDT from WELLINGTON, FL UNITED STATES

04/16/2014

Experience Level: Intermediate

Didn't last long

Lasted just long enough to be out of warranty now gotta spend another 100 dollars or so

0 out of 1 found this review helpful

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KENNY HAACK from Granada Hills, CA UNITED STATE

04/12/2014

Experience Level: Expert

great addition to my reef

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 sad to see it finally fail. This ato is great. You can use it in different configurations and itwill protect your pump from running dry. I like the floats and the cover around it to protect from invert interference. No suction cups is also nice. Any product still utilizing suction cups should be banned. There is an audible alarm but the way I am using it the alarm is out of the picture. You will like every aspect of this product.

2 out of 2 found this review helpful

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BRAD from CONCORD, NC UNITED STATES

04/09/2014

Experience Level: Intermediate

Works good most of the time

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 without filling the tank. I just have to restart the ATO and it works again.

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MATT WEBBER from Gig Harbor, WA UNITED STATES

02/06/2014

Experience Level: Intermediate

Works Great

This this is simple and works as advertised. I bought a $7 pump from Harbor Freights and in 10 minutes had this unit working. Great buy.

1 out of 1 found this review helpful

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DAVID LOPEZ from MORGANTOWN, WV UNITED STATES

01/05/2014

Experience Level: Expert

Great when it works properly

This top off unit works like it suppose to when it works properly..Had an issue with the pump contol..Woke up to a low waterline in sump as somehow it failed to kick on the ATO pump?..So far has only happened once..

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