I've been owning cichlids for over 2 years and I think I'm finally experienced enough to own a Discus. I have a 55 gallon tank with 2 smaller Blood parrots. One of them is a little aggressive but the other one is pretty calm. My other tank is a 40 gallon with a Jewel, Johanni, Yellow Lab, and Kenyi. They're all pretty calm toward each other. I haven't added fish to either of my tanks in a while but I would really like to own a Discus. Is it okay to add one to either of these tanks?