Re: The size of a hookah??
A 29" would be easier to clean. I have a 29" MZ Perpetual River and the cleaning brushes are not long enough to go all the way through the stem. You either have to scrub from one side then the other, or make a cleaning tool like I did. I bought a 1/4" dowel stick and cut it to the proper length and run wetted and dry paper towel pieces down the shaft. Like cleaning a gun.