I ended up using your 3-pump code and adding a 3rd volume pump for the waste line, now all is well

@rottielover make sure nothing is empty, dividing by zero makes funky things happen :)

What did I do wrong? - When I activate this code my Advanced Furnace output dial gets set to an extremely large negative number (-2147483648 possibly one of the hashes??) the dial on the front goes "sideways" and the furnace goes from being powered and turned on to looking like it's turned on but no power... I'm so confused.