I'll just say they are not for someone new to fish, to put it bluntly. They require more attention and care than most other fish do.
The biggest points to remember about discus:
1. They need a group, the larger the better. This is a 60g so I would suggest a group of 5 and no less.
2. Buy from a reputable source. Discus cost a pretty penny and you want to make sure your fish was in good hands before yours and is strong and healthy. Local/online breeders are the way to go. DiscusHans is very well known. PoppaRyno also breeds discus(and needs to send me one!
).
3. Temperature around 83-84 degrees. Stability of this temperature is crucial. When changing water try to come as close as possible to maintaining that. This temperature also puts a severe restriction on compatible tankmates as many fish do not tolerate above 82.
4. As said above, choose tank mates wisely. If you want a discus only tank that's great. But if not, do lots, lots, and lots more research on tankmates before bringing one home.
5. QUARANTINE! These are expensive and sensitive fish! This is a no brainer... QT any new tank mates before entering the display. The last thing you need is a disease outbreak... Ask me how I know? One of the discus I introduced to my tank had columnaris and nearly killed everything. Never again will I skip QT..
6. Lots O' Water Changes... I shoot for one 70% change weekly but if it is in your ability to do them more often every one helps. The reason water changes are so crucial is not as much water quality as it is the hormone that the alpha(top dog) discus releases. It basically stunts(in this case slows down) the growth of the other discus so it stays the alpha. Water changes remove this hormone therefore giving more balanced growth.
7. A variety in diet. I feed 4 different frozen foods on a rotating schedule. I feed x2 daily though 3 is even better. All juveniles benefit from these extra feedings as discus have a shorter digestive tract than other fish. This means they need to eat more. Once adults they can be fed once daily.
8. Lots of hiding places. My tank is basically a jungle of plants they can hide in. This makes them feel more secure. As far as plants go, this is where research comes in. There's many plants that can work, there is also some such as the indestructible Java Fern I had that completely melted away once in the discus tank. Some plants just can't take the heat...
All in all discus are a great endeavor if you are up for a slight challenge but it is very rewarding if you put in the time and effort needed.
Hope this helped you out
I have a 75g discus community myself and of course PoppaRyno on here is the discus masta!
Caleb