Temperature: Red Eye Tetras thrive in warm water, with an ideal temperature range of 22°C to 26°C (72°F to 78°F). pH: They prefer slightly acidic to neutral water, with a pH range of 6.0 to 7.5. Hardness: Soft to moderately hard water, with a general hardness (GH) of 3-10 dGH, is ideal.
