problem with tunze auto top off

[puffer200]

it's not the unit itself. it's the setup i believe. i have the sensor mounted in the sump and the pump in a thirty five gallon rubbermaid trashcan supplied with ro water. the problem is that after the pump finishes pumping, water continues to flow from the tubing. the tubing is running through a hole ive punched (and siliconed) at the base of the container. the water actualy has to travel about a foot or so UP to the sump. both the sump and can sit on the floor below the tank. any suggestions on how to rectify??

 

[groupergenius]

Your 35 gallon rubbermaid water level is higher than the sump isn't it??
I had the same thing. Run the tunze return line up to the display tank.

 

[swalchemist]

Agreed run it to the display tank and add a check valve. Also make sure you take full advantage of the Osmolators safety features by mounting the float switch beside the sensor and setting the threshold to about 1/4 inch. That way if the level rises even 1/4 inch the alarm sounds and the osmolator pump is disabled.