I am really in to the natural look (unfortunately no pictures sorry). It is very cost effective too. I have spent more on the two plastic plants in my 150 than all of the rocks. I find it quite pleasing to build all of the caves and rockwork for the festae. It reminds me of building forts as a kid I guess. In my fifty five I have a nice tangle of driftwood with java wrapped around a lot of it. I have a sand substrate with some pebbles over top. My satanopercca and retroculous love sifting and rooting through it. Anyway wish I had some pics.