Reineck's Alternanthera
Alternanthera reineckii
Alternanthera reineckii is an upright stem plant reaching up to 30 cm. Its leaves are opposite, lanceolate, ranging from olive green to intense red depending on lighting. It produces small white flowers in spikes when emersed. In aquariums, it develops a dense root system. Growth is moderate to fast with good CO2 supply. It is often used as a background or midground plant. Red coloration is enhanced by intense light and low nitrates.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 22–28 |
| pH | 6–7.5 |
| GH | 2–15 |
| KH | 2–10 |
| NO₃ | ≤ 20 |
| PO₄ | ≤ 2 |
Care
Care notes
This plant requires moderate to high lighting (0.5-1 W/L) to develop its colors. CO2 supplementation (10-30 mg/L) is recommended for optimal growth. Ideal temperature is 22-28°C, pH 6-7.5, GH 2-15, KH 2-10. Nitrates should not exceed 20 mg/L, phosphates 2 mg/L. A nutrient-rich substrate is beneficial. Regular pruning promotes branching. It is compatible with most fish and shrimp. Avoid burrowing fish that may uproot the stems.