Query: Anyone else have an issue with Alumina Solution refining continually going idle?

I'm having an odd issue where my Alumina Solution refining cycles 2 or 3 times and then goes and stays idle despite having plenty of bauxite and water available. Any ideas?

EDIT: SOLVED. Thanks everyone. It appeared to be a combination of me feeding too much bauxite into the first refinery and the strange fluid mechanics of output water from the second.