Smoke travels through the fixed downstem into slittted inline diffuser located in the main chamber. The slits in the inline diffuser separate the smoke into loads of bubbles, which cools it down significantly. From there it travels into the reinforced recycler chamber. The built-in conical-shaped recycler chamber recycles the vapor by pushing it downwards through the tube back into the main chamber, where the filtering process starts from scratch. The whirl effect that occurs when the water runs back into the main chamber provides a fascinating visual effect.