need help w/ tunze osmolator

[megs_clark]

I was having the same problem. I just bought mine last month. I had the black tubing just stuck in the water of my sump. I had to raise the tubing out of the water for it to stop overfilling. It was creating a siphon and would pump the water till the alarm would go off and then shut off. As soon as I raised the one end up it stopped. Might be the problem?