The Alternanthera reineckii 'Red' (often associated with forms historically or colloquially referenced alongside sessile variants) is one of the most stunning stem plants available for freshwater aquariums. Renowned for its rich brown-red to vibrant cherry-red hues on both the upper and lower surfaces of its leaves, it provides an exceptional, fiery color contrast against traditional green aquarium flora.

Short Description & Highlights

Alternanthera reineckii 'Red' is a striking midground to background stem plant originating from South America. It adds depth and dramatic chromatic warmth to aquascapes, pairing wonderfully with green sword plants or driftwood. While beginner-friendly when provided with proper illumination and macronutrients, it rewards attentive hobbyists with unmatched coloration.

Key Product Highlights:

Detailed Beginner Care Guide

1. Placement & Aquascaping

Position this plant in the midground or background zones of your freshwater aquarium. Because of its intense coloration, it serves as a phenomenal focal point or "street" style accent piece in Dutch-inspired or natural layout aquascapes. Planting it in groups of several stems creates a dense, colorful bush.

2. Lighting & Coloration

Lighting is the primary driver behind the signature red tones of Alternanthera reineckii. To prevent the lower leaves from shedding and to maintain its vivid cherry-red pigmentation, provide moderate-to-high intensity aquarium lighting. Insufficient light will cause the lower foliage to turn a dull green or brownish color.

3. Substrates, Nutrients & CO2

A nutrient-rich aquarium substrate supplemented with root tabs and regular liquid fertilizer dosing—particularly iron and micronutrients—will keep this plant thriving. While carbon dioxide (CO2) injection (20–30 mg/L) is not strictly mandatory for survival, it heavily accelerates growth and maximizes rich red leaf expression. Regular trimming every 6 to 8 weeks encourages lateral branching and prevents the stems from becoming leggy.