I appreciate this happens with quite a few dosers, it used to happen to my old GHL doser infrequently. However with my 2.1 doser it's a more than weekly occurrence, and not just the alk dosing line either. There no blockages, the pipes just work loose. Is anyone else experiencing this? I would love it if GHL came out with a better connector between the tubing in the doser and the lines you connect to it. Something like the vertex libra has.