Are discus fish fresh or saltwater?
Discus fish are one of the most beautiful freshwater fish in the hobby, known for their spectacular colors and large, circular shape.
What type of water do discus need?
In the wild, Discus thrive in rivers of South America with naturally soft, acidic water. The key to raising Discus in captivity is matching these water conditions. Most Discus are comfortable in water with pH ranging from 5.0-7.0, total hardness from 1-4°dKH, and temperature from 82-84°F.
How big of a tank do you need for discus fish?
Most discus in the common aquarium max out at 4.5-6 inches.
Based on this size range, the minimum tank size would be a 55 gallon tank, but the bigger the better for these guys. 3-5 discus should be doable in a 55gal aquarium as long as water changes are kept up with.