Yeah I was going for a natural look, when i first started it i wanted it to look like the amazon- but that went a bit out the window lol. It started out with really fine gravel that i had used in another tank, but I realised that with a massive pleco in their it would all get stired up, so there's another layer of larger bits of gravel on top of that, with loads of rounded flints i found in the garden scattered about to finish it off- it works as well; the pleco has destroyed anything so far really.