Planted discus tank
In your aquarium, for example, (100-gallon), you can easily put in 20x5in discus or even more.
We suggest you keep Blue Diamond, Red Melon and Snow White. Nice combination in colors. In the community tank of discus, you can decorate the tank with rocks, stones, driftwood, toys and all kind of plants. Discus fish will not destroy the plants. It is good, if you include Amazon sword plants, which have broad leaves. They will lay eggs on the leaves.
Although it is a community tank but we do not encourage you to put other types of fish together with the discus fish, especially Angelfish. They carry certain bacteria and disease which they have very strong antibody against them but not the discus fish.