

Hemianthus callitrichoides 'Cuba', commonly known as Dwarf Baby Tears or HC Cuba, is one of the smallest and most sought-after carpeting plants in the aquascaping world. Originating from Cuba, this delicate species features vibrant, tiny green leaves that form a lush, dense mat across the aquarium substrate, creating a natural and visually appealing foreground. Ideal for nano tanks and Iwagumi-style layouts, HC Cuba adds depth and dimension to any aquascape.
Scientific Name: Hemianthus callitrichoides 'Cuba'
Common Names: Dwarf Baby Tears, HC Cuba
Origin: Cuba
Growth Habit: Low-growing, carpeting plant
Leaf Characteristics: Tiny, round, bright green leaves
Lighting Requirements: High intensity (10–12 hours daily)
CO₂ Requirement: Essential for optimal growth
Placement: Foreground
Water Parameters:
Temperature: 20–28°C (68–82°F)
pH Level: 5.0–7.5
Hardness: Soft to moderately hard water
Growth Rate: Moderate to fast under ideal conditions
Propagation: Spreads via runners; can be trimmed and replanted.
Aesthetic Appeal: Creates a lush, green carpet that enhances the natural beauty of aquascapes.
Ideal for Aquascaping: Perfect for Iwagumi and nature-style layouts, adding depth and perspective.
Habitat Enhancement: Provides shelter and breeding grounds for small fish and invertebrates.
Versatility: Suitable for nano tanks and larger aquariums alike.
Lighting: Provide high-intensity lighting for 10–12 hours daily to promote healthy growth.
CO₂ and Fertilization: CO₂ injection is essential; supplement with liquid fertilizers rich in iron and micronutrients.
Substrate: Plant in fine-grained, nutrient-rich substrate to support root development.
Water Flow: Maintain gentle water movement to prevent debris accumulation on leaves.
Planting Tips: Divide the plant into small portions and plant them evenly across the substrate to encourage uniform carpeting.
Can Hemianthus callitrichoides 'Cuba' thrive without CO₂ supplementation?
While it can survive without CO₂, optimal growth and dense carpeting require CO₂ injection.
How long does it take for HC Cuba to form a carpet?
Under ideal conditions, it can start forming a carpet within 4–6 weeks.
Is HC Cuba suitable for beginners?
Due to its specific requirements for light and CO₂, it's recommended for aquarists with intermediate experience.
Can it be grown emersed?
Yes, HC Cuba can be grown emersed in high-humidity environments and is often used in dry-start aquariums.
How do I prevent HC Cuba from floating after planting?
Ensure each portion is securely planted into the substrate, and consider using planting tools for precision.
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