Rotala macrandra
Rotala macrandra
Rotala macrandra is a stem plant that can reach 30 to 50 cm in height. Its leaves are opposite, oval to lanceolate, and turn bright red under intense lighting and CO2 supplementation. Growth is fast under optimal conditions. It forms dense clumps if pruned regularly. In the aquarium, it is often used as a background or midground plant. Its color ranges from green to red depending on light intensity and nutrient availability.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 22–28 |
| pH | 6–7.5 |
| GH | 2–12 |
| KH | 2–8 |
| NO₃ | ≤ 20 |
| PO₄ | ≤ 1.5 |
Care
Care notes
This plant requires strong lighting (at least 1 W/L) and CO2 supplementation of 20-30 mg/L to show its colors. Ideal temperature is between 22 and 28 °C, pH 6.0-7.5, and GH 2-12 °d. A nutrient-rich substrate is recommended, but it can also absorb nutrients from the water column. Nitrates should stay below 20 mg/L and phosphates below 1.5 mg/L. Regular pruning encourages branching. It is compatible with most peaceful fish. A minimum tank volume of 40 L is advised for a small group.