Been picking up items as I find deals on them. Found a damnear new Mini mite muller. It’s a newer cast aluminum version. The black paint isn’t even worn off the steel wheel. How much sand should it run at once? Assuming water green sand. I’ve read 25# but that seems like to much. How long of a run for mixing new sand, how long to freshen used sand? I’m sure allot of it is feel and experience, just trying to get a baseline.