Mark Rober's CrunchLabs

Season 3 Episode 3: Building a Liquid Sand Hot Tub

With the right amount of forced air, a hot tub filled with sand can look like a bubbling pot of soup. But how? Mark breaks down the science behind it.

Genre:

Family, Documentary

Seasons:

5

Episodes:

40

Cast:

Quality:

HD

Duration:

9 min

First Air:

2025

Rating:

9.7