Alternanthera reineckii (Red Hygrophila)

Alternanthera reineckii (commonly called Red Hygrophila or Scarlet Temple) is a popular South American stem plant prized for its vibrant pink-red to deep burgundy leaves. It provides striking visual contrast against green aquarium plants.

Ideal Water and Tank Conditions

• Temperature: 22°C to 28°C (72°F to 82°F)
• pH Range: 6.0 to 7.5
• Placement: Midground to background
• Growth Rate: Moderate
• Height: 20 to 50 cm (8 to 20 inches)

Care Requirements

• Lighting: Moderate to high lighting is crucial; brighter light intensifies the red coloration.
• Substrate & Fertilizers: Prefers a nutrient-rich aquasoil or fine gravel supplemented with root tabs. Regular iron and trace element dosing helps prevent the leaves from fading.
• CO2 Injection: Recommended (15–25 mg/L) to achieve dense growth and the most vivid red hues.
• Propagation: Easily propagated by cutting the top stems and replanting them directly into the substrate. Trimming the main stems also encourages a bushier growth habit.