I'm afraid all the customers at my Hookah Lounge would think they were in the wrong establishment if my hookahs were as clean as yours is now!
I prefer to think of it as part of the over all ambiance!
(De-nile ain't just a river.)
Actually, I believe most of those particular hookahs haven't been touched by us since I bought them. So that is real geen-u-wine Turkish grunge you've got there, Hayter! (no extra charge, of course.)