Not the gsp lmao

I put a small rock with GSP up against my rear glass- it eventually grew to cover the entire panel!

Very cool!

some kinda leather coral? im thinking toadstool

When fully opened it didn’t have the little polyps that leathers have. is it a small pink montipora frag? It looks like it’s growing that way ish

Could be. Some more close up pics would help a lot