Originally Posted by
Hidan
Angels do fine upto 30C, but probably prefer slightly lower temps, I would suggest 28. Just start lowering your temps 1 degree at a time and the Discus should adapt to it.
Since your Discus have not been in a community tank, they are probably not used to competing with others, but my guess is since they are fully grown, they will adapt just fine. Start with smaller angels, so the Discus still stay the bosses of the tanks.
You could also look into Roseline barb if your looking for activity. Beautiful fish and some members have had success keeping them with Discus and Angels.