Haha seriously, but I really did notice that the tanks I serviced where people smoked in the house were always much much dirtier... Dust and salt caked up on the fans and lights and dust and hair and salt 4 inches thick under the tank covering every square inch of the wet dry as well as the pumps and everything else... Usually the initial service would take me 4 hours of cleaning and vacuuming and scrubbing so that it looked respectable, I mean after all my name was the one they were talking people took care of the tank, but you can only do so much when they only want you to show up 1 time a month you know