very nice Discus man and to answer your question Ice Blue...that is the type of fish

They are not a saltwater fish, they are one of the harder freshwater fish to keep. My first experience with a Discus was I put him in with a convict chiclid LOL. Needless to say the next morning I got up and my poor discus was all mangled. He did survive the night though so I got him out and put him into his own tank. He got a nasty case of ick but I got that cured and he grew big and lived for along time. I gave him a few buddies later on that wouldn't pick on him to. Looks as if you are using live plants in their tank to, I was never a fan of fake plants.
Seeing your tank makes me really want to set mine up again but I can't till we finish remodeling the living room. I doubt I'd do Discus though, I'd either do just a community tank. What size tank is that man?
Before I moved to where we are now I used to build slate caves and pebble wells and sold them locally to fish stores in the neighborhood, If I can dig up some pictures of them I'll post them for you to see....I'll also look for pictures of the last tank I had set up.
(dont know if you meant me or another Chris but I am into aquariums if you didn't know)