Nice layout, neon blue Discus would be perfect for your Tank.
Beautiful fish. There is a building right next to my apartment that has an amazing discus tank that I stop by frequently. I think my tank is too small for at least 4 or 5 discus. I do believe 182L comes out to 48 or 49 gallons.
Your pants have a lot of plants! Is that just white sand?
I have a mixture of white and black sand. The white sand takes up the front of the tank and the path way through the middle. I think I used 3 9L bags of white sand in total and about 30KG in total of black sand. The corys really love to play in the white sand.