Well, I didn’t expect that. When you throw dry ice inside a water bottle and then throw that water bottle in a pool, the explosion of the dry ice bomb is so epic that you can see it pulsate as it rips through the water. The Backyard Scientist shows off what it looks like in slow motion and man, is it powerful.
Just use warm water instead of super cold liquids. A 20 oz coke bottle is a hand grenade when it goes off. Don't drop it on gravel (shrapnel) and throw it at least 30 feet away. It will be louder than any shotgun and will probably get the cops called.