🎯 Key Takeaways
- Plain, clean, cold water is the best bong water. Filtered or distilled water leaves fewer mineral spots.
- Never use alcohol, soda, juice, milk, wine or hot water in a bong you're going to smoke from.
- Change the water every day you use it, or after every session if you can.
- Fill until the downstem or percolator is just covered, about an inch above the slits.
- An ash catcher keeps ash and resin out of the main chamber, so the water stays clean longer.
What to put in bong water
The best thing to put in a bong is plain, clean, cold water. Water cools the smoke and traps some ash and particles; anything else you add either makes the hit harsher, leaves sticky residue or grows bacteria faster.
The best options
- Cold tap water: works fine; cold water cools the smoke better than warm.
- Filtered or distilled water: fewer minerals, so fewer white spots on the glass.
- Ice: if your bong has an ice catcher (pinch), add ice there for an even cooler hit.
Some people add a few drops of lemon juice or a pinch of salt to slow down residue. It doesn't hurt, but changing the water often does far more.
What not to put in bong water
- Alcohol or cleaning solution while smoking: it's for cleaning only, never for inhaling through. Rinse thoroughly after cleaning.
- Soda, juice, tea, wine or milk: sugar and fats get sticky, smell fast and grow bacteria.
- Hot water: warms the smoke instead of cooling it, and sudden temperature changes can crack glass.
- Mouthwash or scented products: not made to be heated and inhaled.
How much water to put in a bong
Fill until the slits of the downstem (or the percolator) are covered by about an inch. Too little and the smoke isn't filtered; too much and water splashes into your mouth. Test it: pull gently without lighting, and if water reaches the neck, pour some out.
How often should you change bong water?
At least once a day on days you use it, and ideally after every session. Dirty water smells, tastes harsh and grows bacteria and mold within a couple of days. When you change the water, give the bong a quick rinse; once a week, do a full clean. Our step-by-step guide shows how: how to clean a bong.
How to keep bong water clean longer
- Add an ash catcher. It sits between the bowl and the bong and catches ash and resin before they reach the main chamber. The DK Barrel Ash Catcher ($21.99) comes with a bowl; the Orb Ash Catcher ($25.99) adds a showerhead perc for extra filtration. See all ash catchers and our best ash catchers guide.
- Rinse between sessions with warm water.
- Clean weekly with isopropyl alcohol and salt, or a ready-made cleaner like Formula 420 Daily Use Cleaner ($19.99), Grunge Off Super Soaker ($24.00) or isopropyl cleaning spray ($9.99). Rinse well before using it again.
📧 Get more honest reviews like this
Our editorial team tests every product we stock. One email per week, subscriber-only discounts included.
FAQ
What is the best thing to put in bong water?
How often should I change my bong water?
How much water should I put in my bong?
Can I put ice in my bong?
Can I put alcohol in bong water?
🔗 Related Briefings
Shop Related Categories
Disclosure: Smokerolla carries the product reviewed here. Our editorial verdicts are independent.
Share:
Best Rolling Machines of 2026: Manual, Automatic & Cone Rollers
Pipe Screens: Types, How to Use Them & Which to Buy (2026)