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Automatic Water Refilling System Keeps an Aquarium's Water Levels Where They Need to Be
JBJ JB5111 Automatic Top Off System Water Level Controller
JBJ JB5111 Automatic Top Off System Water Level Controller
JBJ JB5111 Automatic Top Off System Water Level Controller
Item# 33344
Price: Normally $86.08 
Hot Deal $71.55
Free shipping on orders over $175 - See Details


  • Float sensors that activate within seconds of when water level drops
  • Electronic control module allows two modes of operation with audible alerts and LED panel
  • Linkable brackets allow for easy adjustment and secure positioning of float sensors
  • Pump safety protection feature prevents pumps from running dry and failing

Essential Info

The All-New JBJ Automatic Top Off System (A.T.O.) device is one of the most advanced water level controller system on the market. Maintaining stable salinity and specific gravity in your aquarium is no longer a problem since the A.T.O. will refill as soon as the water level drops. The A.T.O. uses two float sensors to activate a secondary pump to automatically refill to desired water level. It also has a pump safety protection to automatically stop power to the return pump, in the event that it is running dry. The A.T.O. will keep all salt levels at consistent parameters, ensuring an optimal environment for your tank inhabitants.

The A.T.O. is equipped with two 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. This state-of-the-art electronic controller allows for two modes of operation with a total of three different set up scenarios, allowing you more choices for installation for your unique set up. The compact controller also incorporates a visible L.E.D. panel and aninnovative Audible Signal alerts when in operation mode. This kit includes commercial grade "Linkable Brackets" that can easily be adjusted to meet your height requirements and securely positions your float sensors. 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.

What's Included

  • 1x - A.T.O. Digital Controller
  • 2x - Float Sensors
  • 3x - Linkable Brackets
  • Specifications

    ManufacturerJBJ USA
    Manufacturer Product No.JB5111
    Pump Power Supply2 AMPS
    Dimensions1.5 in x 4 in x 2.75 in
    Weight2 lbs

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Transworld Aquatics, Tel: (310) 672-0480 Ext


    1 Ratings
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    Average Customer Rating
    (1 customer ratings)
    Share your thoughts with other customers
    JERRY -- mansfield, TX   5/13/2013
    Took a while to get the sensors set and working properly, but now the system works great! Doe exactly what I need it to do.

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