Are discus hard to keep? Top 6 myths debunked for beginners

In short

Discus are called the "kings of the aquarium" and have a reputation as impossible fish. The truth: they aren't hard to keep, they are just less forgiving of dirty, cold or unstable water. With regular water changes and healthy fish from a good source, they suit a disciplined beginner perfectly.

Myth 1: "You need perfect parameters"

False. Stability beats perfection. A steady pH of 7.2 is far better than a pH jumping between 6 and 7 because you keep trying to "correct" it. Discus bred in Europe and Asia are adapted to harder water than the Amazon.

Myth 2: "Discus can be kept alone or in a pair"

False. Discus are a group fish. Kept alone, one becomes stressed, hides, eats poorly and may stay small. Keep at least 5–6 discus of the same size (difference under 4–5 cm).

Myth 3: "They only eat live food or beef heart"

False. Farm-bred discus eat quality pellets without problems. A varied diet (pellets, frozen, beef heart) is ideal, but live food isn't mandatory – and it can bring parasites.

Myth 4: "You absolutely need reverse osmosis"

Not always. If your tap water has a moderate TDS and is stable, adult discus do well in it, dechlorinated. RO becomes necessary for very hard water or for breeding.

Myth 5: "You can't have plants with discus"

You can, if you choose plants that tolerate 28–30°C: Anubias, Microsorum, Echinodorus, Cryptocoryne, Vallisneria. Many common plants melt at that temperature.

Myth 6: "Wild discus are impossible"

False. Properly adapted, they need the same as hybrids: 29–30°C, pH below 7, the same food.

What really matters

Conclusion

If you can do weekly water changes (ideally more often) and have the patience not to constantly "fix" the water, you can keep discus.