JBJ ATO System

5.00 out of 5
(1 customer review)

$ 79.99


Tired of lifting heavy buckets to refill pumps or tanks due to evaporation?

There is finally a professional grade product that automates refilling evaporated water. The reliable 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 all salt levels at consistent parameters, ensuring an optimal environment for your tank inhabitants


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 L.E.D. 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 your reservoir, in the event that your reservoir is low on water. This safety feature prevents pumps from running dry and failing. (Mode A- Example 1)


  • 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)

Additional information

Weight 1 lbs

1 review for JBJ ATO System

  1. 5 out of 5

    Chris from Wyoming

    Reliable ATO

    I have had my JBJ ATO running for 1 year. I would say they are pretty dummy proof. Just clean the sensors every couple of months any remove any calcium deposits. As long as you do the maintenance, you can pretty much set it and forget it.The unit has a safety mechanism which will shut off off the pump if it has been on for more than 3.5 minutes. The unit makes top off a breeze.

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