Wilds aren't any different than domestics if you get them from a source that has properly acclimated them. They are easily adapted to most water conditions. The only thing you need to worry about is water quality, so keep up the water changes. Discus are really sensitive to nitrates and DOCs compared to other cichlids.
I usually do 70% a week. What happens if they are not happy?
I really like your set up, and was wondering the tank dimensions and how many gallons ? I'm currently building a new 240 gal tank to move my discus into and was hoping to have a similar look to your tank.
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Thanks. It's 96x30x18.