Seventeen bongs whose published specifications state more than one chamber. Sixteen are listed as Double Chamber and one — the 16.5" Diamond Pounder — as Triple Chamber. Heights run from 9" to 16.5", and prices from $44.95 to $119.95.
What a second chamber is
In a single-chamber bong, smoke passes through water once and travels up the tube. In a two-chamber design it passes through the first chamber, then enters a second sealed section with its own water line, before reaching the neck. A second chamber can add airflow resistance compared with a simpler single-chamber design, depending on the percolators and internal pathways.
How the chambers are filtered
Fifteen of the seventeen list a percolator as their filter type. A matrix perc is a cylinder gridded with slits on every face, so airflow exits in many directions at once. A tree perc is a ring of vertical arms, each slitted at the bottom. A ratchet perc is a disc of angled slits that sets the water turning. The remaining two — the 12" Diamond Pounder with Ratchet Perc and the 9" Heavy Mini Henny Matrix Traveler — list a diffused downstem as their filter type despite their names, so check the specification block on those two product pages before you buy on perc style.
Sizes and fitment
These run from 9" to 16.5". The 9" Mini Diamond Pounder and the 9" Heavy Mini Henny Traveler are the two compact pieces. A second chamber does not change which bowl fits — a standard slide for that joint size works normally. Joint size and stem type are listed per product.
Which one should you buy?
Lowest-priced two-chamber beakers: the 12" Double Chamber Tree Perc and the 12" Double Chamber Matrix Perc, both $49.95, both 4mm wall. Thickest wall in the group: the 16" Heavywall Matrix Beaker at $79.95 and the 16" Tree Mega Pounder at $119.95, both listed at 7mm. Most compact: the 9" Heavy Mini Henny Matrix Traveler at $44.95. The only triple-chamber piece: the 16.5" Diamond Pounder at $79.95. Heaviest bases: the Pounder models, listed at an 18mm+ pounder bottom.
Cleaning a two-chamber bong
Two chambers means two places for residue. Drain both before cleaning — tip the piece slowly so the upper chamber empties through the perc rather than back into the base. Isopropyl alcohol and coarse salt, plugged at both openings, then a long shake and a thorough rinse. Perc slits are narrow, so they need more attention than a plain downstem.
Frequently asked questions
What is a double chamber bong?
A bong with two separate water sections stacked between the bowl and the mouthpiece, rather than one. The smoke passes through two separate water stages instead of one.
Are double chamber bongs better?
They are different rather than simply better. A second chamber adds another water stage, and it can add airflow resistance compared with a simpler single-chamber design, depending on the percolators and internal pathways. There is also more internal glass to clean. Which you prefer depends on which of those trade-offs matters more to you.
How does a double chamber bong work?
The first chamber holds water and the downstem or primary perc. Smoke passes through it, rises into a second sealed chamber with its own water line, passes through that, then travels up the neck.
How much water goes in a double chamber bong?
Each chamber fills independently. Covering the slits by roughly half an inch in each is the usual starting point. The upper chamber fills quickly, and too much water there sends water up into the neck.
How do you clean a double chamber bong?
Drain both chambers, plug both openings, and soak with isopropyl alcohol and coarse salt for longer than a single-chamber piece. Agitate gently rather than forcing a brush through the perc slits, then rinse thoroughly with warm water.
Can you add an ash catcher to a double chamber bong?
Yes. An ash catcher collects debris before it reaches the first chamber, which keeps the percs cleaner for longer. Match the ash catcher's joint size and angle to the bong's joint.
What is the difference between a chamber and a percolator?
A percolator is the slitted glass component that splits the airflow. A chamber is the sealed section of the bong that holds it and its water. A two-chamber bong has two such sections — though on two pieces here the second stage is a diffused downstem rather than a perc.
