Nick is right!!
Discus are not that hard to keep. His key line is that he's still studying. They simply require more knowledge and time than all other
FW fish to keep them in optimum health. I know Nick asks questions and spends time. He's a dedicated aquarist.
Keeping things as simple as possible is important to a beginners success. Discus do stress easily and will succumb to a wider variety of maladies. My advice to a beginner would be this.
1. Don't worry too much about
PH and hardness. Discus will adapt easily to most water.
2. Don't mix them with any other species at first. In this way you'll insure the discus get their share of food without over feeding.
3. Keep the tank bare bottom and wipe it clean at least twice a week. Discus produce a heavy body slime which can cause problems keeping the tank clean.
4. Change water at least every other day. I change 40% daily, but then I keep a lot of fish per tank.
5. Sponge filters and lots of aeration. Higher temps deplete
O2 quickly.
6. Provide a varied diet. Frozen blood worms, Tetra Color Bits and Earthworm flakes are all you need. You'll probably have to tempt your discus to eat at first.
7. Have a problem? Come back and ask a question.
HTH