Alternanthera reineckii 'Rosa' (frequently traded as 'Rosaefolia' or 'Pink') is a stunning stem plant that introduces a brilliant splash of warm magenta and deep pink tones to freshwater aquariums. Featuring striking leaves that are olive-green to bronze on top and vivid purplish-pink underneath, it serves as an exceptional structural focal point designed to contrast against traditional green aquascaping flora.

Short Description & Highlights

Alternanthera reineckii 'Rosa' is a hardy, medium-growth stem plant originating from South America. It is widely favored by beginner aquarists looking to incorporate authentic red plant coloration into their layout without overly delicate maintenance demands. It develops its richest hues when given adequate lighting and stable water parameters.

Key Product Highlights:

Detailed Beginner Care Guide

1. Placement & Aquascaping Design

Due to its vertical growth structure and heights reaching up to 16 inches, Alternanthera reineckii 'Rosa' is ideally positioned in the midground or background zones. Planting them in small bunches or staggered groups of 5 or more stems generates a striking color block effect that naturally breaks up dense green carpets and stem walls.

2. Lighting Requirements & Coloration

While it adapts well to moderate aquarium lighting, light intensity directly governs its color expression. Moderate-to-high illumination encourages deeper crimson and vibrant pink pigmentation on the underside and margins of the leaves. Ensuring unobstructed light exposure prevents lower leaves from shedding prematurely.

3. Substrate, Nutrients & Propagation

This plant thrives best when rooted in a nutrient-dense aqusoil or standard substrate supplemented with regular liquid fertilizers containing iron. Carbon dioxide (CO2) supplementation is not strictly required for survival, but a mild injection significantly accelerates growth vigor and heightens color vibrancy. Propagation is straightforward: clip healthy top stems (5 to 10 cm) and replant them directly into the substrate to encourage the mother plant to branch out into a bushier form.