Lava Rock Substrate?
I was at a nursery recently, and saw they had bulk lava rock on sale for $8 for a big bag. I'm going to be using topsoil/clay, and needed something to cover it up. While I know that Lava rock is sharp and not always recommended, I won't be keeping any big fish. I was probably going to go with Shrimp/pair of dwarf German rams. (maybe some tetras)
The reason I want to consider lava rock is,
1. It looks like a great substrate to have a java moss carpet on,
2. It's cheap!
Now my plan is to eventually have non to very little of it showing, are there any other issues with it? And will it scratch up my tank if I use it? And how sharp is it? Are we talking about my RCS being amputees or just an issue with bigger fish.