Originally Posted by
Willie
One point to consider since you are new to discus. Domestic discus are raised in crowded conditions with large, frequent water changes. If you're going to buy 2" - 3" fish, they'll get "lost" in a large tank. You'll find them to be very skittish and often they'll stop eating. Since you've already committed to a 125, you should consider buying bigger 4"+ fish to start. Another possibility is not to fill the tank to reduce the water volume.
If you're starting with smaller discus, I'd recommend raising them in a smaller tank.
Welcome to the hobby, Willie