oo, I really enjoy discuss.
warm water
pH of 6.3 and stable
Get some floating plants, and some other plants to hide in. Live is most definately preferable.
They don't like a lot of flow, so maybe one very large filter.
Also - don't settle for the $20 discus, they are cr@- go with the 80-120$ discuss. The expensive ones are the "damsels" of the discuss world. In other words, very hardy.