Rotala is a popular aquatic plant in the aquarium hobby, known for its vibrant colors and delicate foliage. Rotala Green, specifically, is a variety that is easier to care for compared to some of its more demanding relatives like Rotala rotundifolia or Rotala indica. Below is a comprehensive guide to help you grow and maintain Rotala Green in your aquarium.
1. Overview of Rotala Green
- Scientific Name: Rotala rotundifolia ‘Green’
- Family: Lythraceae
- Origin: Southeast Asia
- Difficulty: Easy to Moderate
- Growth Rate: Fast
- Light Requirements: Moderate to High
- CO2 Requirements: Low to Medium (benefits from CO2 supplementation)
- Placement: Midground to Background
2. Tank Requirements
- Temperature: 72°F – 82°F (22°C – 28°C)
- pH: 6.0 – 7.5
- Water Hardness: Soft to moderately hard (2-15 dGH)
- Substrate: Nutrient-rich substrate or root tabs for optimal growth
- Lighting: Moderate to high lighting (2-4 watts per gallon or 40-80 PAR)
- CO2: Not mandatory but recommended for denser growth and vibrant color
3. Planting and Propagation
- Planting: Rotala Green can be planted in groups for a bushier appearance. Trim the stems and plant them into the substrate, leaving some space between each stem to allow light to reach the lower leaves.
- Propagation: Propagate by cutting the stems. Simply trim the top portion of the plant (about 4-6 inches) and replant it into the substrate. The remaining stem will often produce new side shoots.
4. Care Tips
- Fertilization: Use a balanced liquid fertilizer to provide essential nutrients like nitrogen, phosphorus, and potassium. Iron supplementation can help maintain healthy growth.
- Pruning: Regular trimming encourages bushier growth and prevents the plant from becoming too leggy. Trim the tops and replant them to fill in gaps.
- Water Changes: Perform regular water changes (20-30% weekly) to maintain water quality and prevent algae growth.
- Algae Control: Ensure proper lighting duration (6-8 hours per day) and avoid overfeeding fish to prevent algae from competing with Rotala Green.
5. Common Issues
- Melting: Rotala Green may melt when first introduced to a new tank due to changes in water parameters. This is normal, and the plant will usually recover with proper care.
- Leggy Growth: Insufficient light can cause the plant to grow tall and sparse. Increase light intensity or duration to encourage compact growth.
- Yellowing Leaves: This may indicate a nutrient deficiency, particularly iron or nitrogen. Adjust your fertilization routine accordingly.
6. Compatibility
- Fish: Rotala Green is compatible with most community fish, including tetras, guppies, and rasboras. Avoid fish that are known to eat plants, such as goldfish or cichlids.
- Invertebrates: Shrimp and snails are great tank mates and can help keep the tank clean.
7. Benefits in the Aquarium
- Provides excellent hiding spots for fish and shrimp.
- Enhances the aesthetic appeal of the tank with its bright green foliage.
- Helps improve water quality by absorbing excess nutrients.
By following these guidelines, you can successfully grow and maintain Rotala Green in your aquarium, creating a lush and vibrant underwater landscape.
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