hi
ur right, trial and error is essayist, execpt that i cant do it, im manufacturing this project 1 time only and it isn't home made style.
i see what ur saying about the pump i know for sure it dose vary and isnt accurate, yet when i though about it i realized the question is different.
so if i have a very wide but short cut, it seems to me that that a large amunt of water can go throw like the edge of a cup or bowl, but im not sure about how high i think it a very hard quistion to say without seeing i think il just have to take some extra to avoid problems.