Hello all. New user here. Sorry for my wall of text. Maybe a week or two ago, my bong started to resonate at the mouth piece when I hit it. It hasnt done this before. To be fair it had gotten pretty dirty, thinking this was the cause I decided to clean it to see if that would fix it. It hasnt. There is very little reson left in the bong its basically completely clean. Perhaps there is a invisible to my eye layer of film coating the wall of my bong not allowing the reson to grab the walls anymore? Everytime I hit my bong I am getting a slight amount of reson on my lips. It is a double chambered percolated bong with a thinish glass tube (maybe an inch around) where you hit it (the mouthpiece). I just used salt and hot water to clean. Maybe I should buy an actual 420 cleaner? Thanks for reading and helping. I'm super stoned forgive my badly put together wall of text!
make a tight seal with your mouth on the piece. don't let air in on the sides of your mouth. wish I could explain why this works...