Last Hope, lmao! The search on the forums will bring up all kinds of good info if you have specific concerns. Good place to look for pics of other's roses, other setups (and yours looks better than most of them by far!!) and tips, tricks, etc. I don't recall if you have to join to see the pics or not... I'm not very active on there, but I do enjoy looking for viv ideas there from time to time.

Oh, and your substrate should be fine