The most distinctive feature upon first glancing at the pipe is the big blue donut. It is more than simply a decoration, as it connects the glass joint to twin matrix percolators. As smoke enters the glass joint, it is forced through the donut and then the many holes of the bottom perc, which forces the smoke through the water in more places, cooling it efficiently as a result. With the top perc the smoke can be cooled a second time, depending on the water level.
There are two optimal water levels for this bong, but it is dependent on experience and lung power of the user. Utilizing the full percolation power of the bong will mean a water level high enough to cover up the bottom row of holes on the top perc, and is recommended for experienced users with extra lung power. Be sure to remove the slide while inhaling the cooled smoke and replace it after the water settles, as there will be a pressure difference at this water level. For people who are new to water pipes or don’t have as much lung power, it is suggested to submerge most of the donut.
The bent neck stops percolating water from reaching up to the mouthpiece at all when the water level is at this lower setting, and keeps water away from the mouthpiece the majority of the time when it reaches up to the bottom row of holes on the second perc at the higher water level.