I thought it'd be cool to start a topic about your methods for keeping your hookah pristine and clean!
I've got a 38'' km, and found that just running pipe cleaner through the stem didn't get that notorious stink out... So, what I started to do was plug the down-stem, purge valve and hose port. Then I pour a small amount of lemon juice down all the ports and down-stem. Next thing I do is fill it all up with hot water and then dump in sea salt! Let it soak for ten minutes or so before rinsing it clean and voila! Clean, stink free hookah!