Gravel

Or more accurately - Dust Free, Safe, Non-Toxic, Aquarium Gravel. Safe? Against what? Sucidal, gravel-eating fish? Who knows? Certainly not the goldfish who are just relieved to be out of their luridly gravelled holiday home and back in their familiar land of the less lurid. Aka their bowl.

Went to see Logan Lucky this evening by the way, a pretty good wee film. Recommended.