Possible new technique to create extra porous DIY rock

[Zeeth]

Today I stumbled across this video on creating Aircrete with xantham gum, dish detergent, and portland cement. The demonstration of mixing until the bubbles on the surface begin to pop to create an open cell foam seem like it would work quite well to create a porous base for DIY rock.

 

[FUNGI]

Today I stumbled across this video on creating Aircrete with xantham gum, dish detergent, and portland cement. The demonstration of mixing until the bubbles on the surface begin to pop to create an open cell foam seem like it would work quite well to create a porous base for DIY rock.

Interesting....I would think that it would float......

 

[Zeeth]

It shouldn't float if it's porous enough for water to freely flow through, as he shows in the demonstration at the 7:22 mark. It looks like it should be similar to the density of commercially available ceramic biomedia which does not float.

 

[czynot]

lol. You bet me to it. Only thing I don’t like is the soap. Soap trapped inside the cement may take long time to leech out.
I do not believe soap are reef safe.

 

[swiss1939]

I'm game to try it.