[westurner]

Could they be made from under spec for other applications steel?

There's not yet an awesome-coral restoration markdown README.md; or any mentions of both "MARRS" and "Reef Cubes".

Do coral prefer steel to other materials like concrete, sargassumcrete, hempcrete, sugarcrete, formed CO2, or IDK cellulose; and can you just add iron to the mix or what do coral prefer?

Can RUVs and robots deploy coral scaffolding safely at scale underwater?

What other shapes would solve?

[westurner]

"Researchers create green steel from toxic red mud in 10 minutes" (2024) https://newatlas.com/materials/toxic-baulxite-residue-alumin... :

> Researchers have turned the red mud waste from aluminum production into green steel

Perhaps green steel for steel coral reef scaffolding