Liquid Sand Hot Tub- Fluidized air bed

Liquid Sand Hot Tub- Fluidized air bed

I don't like sand. It's coarse, and rough, and irritating, and it gets everywhere.

Fluidized beds are used in industry for various reasons. They also happen to be really cool to play with and swim in. I made a liquid sand hot tub by adding air in just the right way.

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