I started with some schooling fish (neon tetras, zebra danios) and a gourami, nothing major. I made a huge switch and got Jack Dempsey's after I upgraded my tank. They were beautiful fish, just too big for the tank. Since removing the JD's, the tank is quite.. empty. I have some small-ish decor. I've got some small faux plants in there as well as a bubbler and some "Zen" type decorations. I have black gravel as substrate currently, but I would like to switch over to sand for Africans. I've also heard building caves (or just some rock work in general) is a good idea. Given those details, I'd like some advice as to what to do to make sure the environment is African cichlid friendly. Thanks community!