Who Gives A Fish Forums

I think your Mum has a valid point about the rock sizes, they do seem quite uniform. Adding some variation in height or size could break up the monotony of the pile and create more visual interest. Consider introducing a break in the pile to create some depth and layers.

From my own experience ...

Yeah, keep us posted. And don't stress if they take a minute to adjust. Plants can be drama queens sometimes.

Yep, Anubias is the way to go. Mine survived a power outage that killed half my other plants. They're basically indestructible.