Alternanthera reineckii medium

Alternanthera reineckii 'Medium' is a classic and popular red stem plant native to South America, beloved in the aquarium hobby for its striking lance-shaped leaves that display rich shades of pink, red, and burgundy — providing a vivid colour contrast against the greens of a planted aquascape. One of the most widely grown red plants in the hobby, it is a reliable and rewarding choice for aquarists looking to add warm, jewel-toned colour to the midground or background of their tank.

Propagation: Take stem cuttings of 5–10cm, remove lower leaves, and replant into the substrate. Pinch tops regularly to encourage bushy lateral growth and maintain vibrant colouration.

Care Guide

• Origin: South America
• Light: Medium to High
• Water Parameters: pH 6.0–7.5 | Temp 22–28°C | Soft to moderately hard water
• CO2 Required: No (CO2 and high light intensify red colouration)
• Fertiliser: Regular liquid fertiliser recommended; iron supplementation enhances colour
• Placement: Midground to Background
• Skill Level: Beginner to Intermediate
• Max Size: 20–40cm