Diet Coke & Mentos with Geyser Tube

[JustinSMonnin]

so I never saw this one in real life, but nonetheless, I'm impressed

[mecidlo]

Old trick! But nice!

I know next trick with coke, get normal coke to water, and it will fall down. And get to the water Light Coke, and it will be swimming! P.S: sorry for my english!

[mrericsully]

I'm not sure I follow, but my guess is that you are referring to the idea that regular pops/sodas/colas sink in water and diet ones float (although they could be layered ina density column this effect is simplest to see when sealed cans are put in water).