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Mark Rober's CrunchLabs

Mark Rober's CrunchLabs

HDTV 2026 3 months ago

Mark Rober's CrunchLabs

Building a Liquid Sand Hot Tub #S03E03

9.7
9m 2026 48

Building a Liquid Sand Hot Tub

Mark Rober's CrunchLabs  ·  Season 3, Episode 3

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.


Episode 3 of Season 3 from Mark Rober's CrunchLabs — available to stream in HD on any device.

Released
19 Nov, 2025

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