I am doing a project in which I have to flow water between two containers, which are connected at the bottom by a 1/4" hose. Remarkably, the surface water tension is such that water does not flow between the containers. I can see the water wall at the outtake of one of the containers, despite the fact that the other container is almost full with water. If I put a piece of adsorbent paper on the outtake, this brakes the surface tension and water flows well. Is there any other way to break the surface tension not requiring a chemical change of the water?. Like a design that maximizes surface?
1) shape the surface of the hose outlet into a large nozzle shape, broadening the surface that has to be held by surface tension
2) or extend the hose in a bit and cut it off at a shallow angle, again increasing the area that would have to be covered
3) put a valve between the two volumes and open it slowly, such that the hose isn’t full before flow is established
increase the diameter of the hose to 1/2".