Making Skull Dead Rock
 

I had lots of fun to do this by my self

https://youtu.be/5193Jw_MStE

Seems no one like it, no single comment :(

I like it......it gives the aquarium that edgey look keep it up looks cool

creative... can you list what materials you used for this? and did you cure it?

Very artistic.

I'd be concerned what may leech into the water from your cement mix.
I'm guessing the white powder was portland cement?? The cement is ok other than it will initially spike pH, but I don't know what the yellowy colored stuff you used in the mix is ?

Curious about the mix in other words.

Portland white cement or Portland 1 or hydraulic water stop
Sand or crushed oyster shell
Water


Option 2

Pond foam uv resistant
Table salt to shape.

wow, this looks so awesome!