Fish tank stones

2nd person rattles my fish tank for a replica for their aquarium. And they pointed me to this video.

Fishes, is not something I have considered. Till now. This looks fabulous.

So yes, I’ll be sure to have fish friendly materials. And you’d be able to buy parts of the diorama — you don’t need the whole thing.

I’m wondering if there could be a way, of flattening the stone circle, too. Like this fella has done. So it fits into a not so wide/deep tank: an ellipse, but still with the correct perspective from the front.

Flattened stone circle