Hi, I'm looking into setup my 50 gallon tank for Discus. I found they are super peaceful to watch. They look like colorful balloons! I also heard that they were difficult to keep. Why is that? I know they like the temperature between 84-86 degree. I usually do a 20% water change weekly. I plan on raise a herd of six 2" discus. As the reached to the adult's size, I will rehome 1 or 2... only if the tank is crowded. Is there anything I should be aware of as far as the care? Also, anyone has any luck on breeding them? Thanks.