Water pipes & bongs
by Groove
We'll only email you about this product — no marketing.
The Groove 12 Straight Bong is a 30 cm (12-inch) borosilicate water pipe that does exactly what a bong should do: cool your smoke, filter it through water, and deliver thick, smooth hits without making you read an instruction manual first. Straight tube design, 14 mm bowl, ice-compatible neck, black accents on clear glass. That's it. That's the whole pitch — and honestly, that's all most people need.
Groove has built a reputation for stripping away the gimmicks and focusing on what actually matters: airtight ground glass joints, functional ice notches, and a shape that's easy to clean. We've handled dozens of bongs in this price range over the years, and the Groove 12 sits right in the sweet spot between "cheap enough to not cry if it tips over" and "well-made enough that it won't tip over in the first place." The weight of the base keeps it planted on a table — you can feel the thickness of the glass when you pick it up.
Every measurement you need before buying — no surprises when the box arrives.
| Spec | Detail |
|---|---|
| Height | ~30 cm / 12 inches |
| Tube design | Straight |
| Bowl size | 14 mm |
| Joint type | Smooth ground glass |
| Ice notches | Yes |
| Glass colour | Clear with black accents |
| SKU | HS2601 |
| Brand | Groove |
Complete your setup: A straight bong like the Groove 12 pairs well with a decent grinder — pre-ground herb packs more evenly into a 14 mm bowl and burns more consistently. If you don't already have screens, grab a pack of brass or stainless steel pipe screens to stop small pieces pulling through into the water.
Here's the thing about water pipes: the fancier they get, the harder they are to clean, the easier they are to break, and the more likely you are to lose some tiny rubber gasket that renders the whole thing useless. The Groove 12 straight bong sidesteps all of that. A straight tube is the easiest shape to clean — run a brush through it, rinse, done. No percolator chambers clogging with resin. No weird angles where water sits and goes stale. Just a tube, a downstem, and a bowl.
The 14 mm ground glass connection is worth mentioning because it's the most common size in the market. That means replacement bowls, ash catchers, and adapters are dead easy to find. You're not locked into some proprietary system. If you crack the bowl (and everyone does eventually — it's the most vulnerable part), you swap it for any standard 14 mm piece and you're back in business within a day.
Ice notches are the other feature that earns its place. Drop 3-4 ice cubes into the neck, and the smoke passes over them before it reaches your lips. The difference is immediate — noticeably cooler, less throat irritation, and you can take bigger pulls without coughing your lungs out. On a warm afternoon, it genuinely changes the experience. We'd go as far as saying: if you're buying a bong without ice notches in 2025, you're making life harder for yourself for no reason.
No product is flawless, and we'd rather tell you now than have you find out the hard way. The Groove 12 is a straight tube, which means the centre of gravity is higher than a beaker-style bong. It's stable enough on a flat surface thanks to the weighted base, but if you've got a wobbly coffee table or a cat with boundary issues, a beaker bong with a wider base might be the safer bet. Something like a classic beaker bong in the same height range gives you more stability and a larger water chamber — but it's also harder to clean.
The other thing: 30 cm is a mid-size piece. It's tall enough to cool smoke properly but short enough to store in a cupboard. If you want desktop-only, room-clearing clouds, a taller piece (40 cm+) with a percolator will give you more filtration. But for everyday use? The Groove 12 straight bong hits the balance between portability and performance better than most things in its price bracket.
Straightforward setup — you'll be taking your first pull inside 2 minutes.
After 25+ years of selling water pipes from our Amsterdam shop, we can tell you the number one mistake people make with a new bong: they don't change the water. Seriously. Fresh water every session. It takes 30 seconds, and the difference in taste is night and day. Stale water doesn't just taste foul — it stops filtering effectively because it's already saturated with tar and particulates.
The second most common issue? Overpacking the bowl. A 14 mm bowl on the Groove 12 holds roughly 0.2-0.3g of ground herb comfortably. Pack it any tighter and you'll restrict airflow, get uneven burns, and waste material. Treat it like a coffee filter — loose enough that air moves through, tight enough that nothing falls into the downstem.
Yes — a straight tube is the simplest bong design to use and clean. The Groove 12's 30 cm height delivers enough water filtration and ice cooling to smooth out hits without any complex percolator systems to figure out. Fill, pack, light, inhale.
Absolutely. The ice notches are optional. Without ice, you still get full water filtration. Ice just adds an extra cooling layer that reduces throat irritation — nice to have on warm days, but not required for every session.
Change the water after every session. Give the tube and downstem a proper clean with isopropyl alcohol and coarse salt once a week if you're using it daily. Straight tubes are the easiest shape to clean — a long brush reaches the entire interior without awkward angles.
A straight tube like the Groove 12 is lighter, easier to clean, and clears faster. A beaker bong has a wider base (more stable) and a larger water chamber (more filtration). If stability is your priority, go beaker. If easy cleaning and quick clears matter more, go straight.
Yes. The Groove 12 uses a standard 14 mm ground glass joint, which is the most common size across brands. Any 14 mm male bowl, ash catcher, or adapter will fit without modification.
Enough to submerge the bottom of the downstem by about 2-3 cm. That's roughly 150-200 ml depending on your downstem length. If you hear gurgling without splashback when you inhale, you've nailed it.
Yes — any 14 mm ash catcher will slot into the ground glass joint. It adds an extra filtration stage and keeps the main chamber cleaner for longer. Just be mindful of the added weight on the joint.
Last updated: April 2026
