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JBJ Automatic Water Top Off (A T O) System Water Level Controller

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JBJ Automatic Water Top Off (A T O) System Water Level Controller
JBJ Lighting Nano Cube Aquariums
Price: $137.95
Our Price: $95.00
You Save: $42.95 (31%)


  • Automatically replenish water lost through evaporation
  • No longer lift heavy buckets to refill sumps or tanks due to evaporation
  • Advanced features include: float sensors, electronic controller module, linkable brackets, and pump safety protection
  • 6 month manufacturer warranty
↓See detailed description below.↓
  Description   Reviews  
JBJ Automatic Top Off (A.T.O.) System Water Level Controller

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 all salt levels at consistent parameters, ensuring an optimal environment for your tank inhabitants.

  • (1) Water Level Controller System
  • Model: Self-Leveling A.T.O.
  • Purpose: To automatically replenish water lost through evaporation
  • The A.T.O. receptacle will handle pumps up to 2 amp capacity
  • Dimensions (L x W x H): 1.5" x 2.75" x 4"
  • Weight: 2 lbs
  • Note: Return Reservoir Pump Not Included
  • A recommended dosing pump includes the Tom Aquatics Aqua Lifter Dosing Pump or equivalent
Recommended Techniques:

Carefully view the instructions provided if you need to increase the run time. Upon getting the sensors adjusted it will work well. You could also easily secure the sensor with zip ties that sits in the fish tank if the plastic rods that comes with it, do not attach to your style of fish tank well, which is a very easy fix.

Advanced Features Include:

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
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. The compact controller also incorporates a visible LED panel + an 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 the reservoir, in the event that your reservoir is low on water. This safety feature prevents pumps from running dry and failing. Also the fail safe timer setting stops the pump after a certain period of time, so that if the sump sensor malfunctions the pump does not just keep filling and filling.

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