Originally Posted by glostersa
Hmmm Foil Puffing up or out will only say that someone is blowing into the hose. could be after taking a hit when the water moves back up the stem to the level in the vase that could cause this blowing action. Also the foil must be pulled tight try what Patelboy2006 does he tapes his foil around the stem of the funnel to hold it tight.
Actually no, it puffs up/out when taking a drag/hit. I'd make a video but I'm not sure if it should be my first ever hookah vid lol
That champagne idea looks promising, I've read a bunch of times that the paper clip mod works well.