Making own rock

[KDP]

Has anyone Got any tips when it comes to making their own rock.
I’m wanting a specific set up for me new tank. But I can’t explain my vision and would like to make it myself.
I’ve seen videos and read some advice but does anyone have any clever ideas.
Anyone have any materials they advice to stay clear of or recommend, feel free to share.

 

[Fishko]

Marco rock has this product thats a motar you can use to cement smaller rocks into a bigger structure. Could be useful

 

[cvrle1]

Stickied thread

https://www.reef2reef.com/threads/diy-rock-tutorial-info-thread-rocks-walls-floors-etc.31971/

 

[blasterman]

I use lava rock. Chemically inert and widely available. Also super porous. Corals live to encrust on it. I have some SPS tanks full of it and never had an issue.

 

[John08007]

I use lava rock. Chemically inert and widely available. Also super porous. Corals live to encrust on it. I have some SPS tanks full of it and never had an issue.

Isn't laverock full of phosphate?

 

[Fishko]

Isn't laverock full of phosphate?

I thought it could leach aluminum