I actually have the rocks on both sides stacked twice as high than what is in the pic. There are plenty of caves in there, the castle is also big caves..
I might eventually switch it up though and put the castle in a new community tank.
I;d agree lots more slate and ditch the castle. Castles and fake coloured plants look daft in tanks llike that especially when the rest of it with the slate anddark substrate looks so good
It's actually not slate. believe it is a metamorphic rock called Schist. It is very flakey and has quite a bit of Mica in it, also some nice veins of fools gold in a lot of the chunks. I bought it at a local landscaping supply for .32 cents per pound.. Much cheaper than buying it from a petshop.. All that rock cost me about $15