Congratulations for your nice Wilds, and your great Aquarium decor, I jusr wanted to give you a couple of advices, if you like.
1. The Discus are from the Rio Jutaí basin as you can see in my book, Bleher's Discus volume which maybe you know covers really everything about wilds (380 populations) and the Amazon.
In the Rio Mutum, for your informations, do not live any Green Discus (S. aequifasciatus), only Blue Discus (S. haraldi). Glaser does not know, and has never been there, just passes on what one tells him (or not).
2. Although you tank is very nice, I suggest you give your nice wilds some shade: by floating plants (ie Eichhornia crassipes, Pistiai stratoites, Azolla species, Utricularia sp.). They like it., Also fine white sand, as the one you have seems a little to large for them.