Eriocaulon cinereum is a unique and attractive aquatic plant that is gaining popularity in the aquarium hobby. Here are some key details about this plant:

Description

• Appearance: Eriocaulon cinereum has thin, grass-like leaves that form a dense rosette. The leaves are typically a light green to greyish-green color.
• Size: The plant can grow to a height of about 5-10 cm (2-4 inches), making it suitable for foreground or midground placement in aquariums.

Habitat

• Native Range: Eriocaulon cinereum is found in various parts of Asia, including India, China, and Japan.
• Natural Habitat: It grows in shallow, stagnant waters, often in rice paddies and other slow-moving or still water bodies.

Cultivation in Aquariums

• Light Requirements: High light levels are essential for healthy growth and maintaining its compact form. Low light conditions can lead to elongated and less vibrant growth.
• CO2 Requirements: CO2 injection is highly recommended to support robust growth and maintain its compact, rosette shape.
• Substrate: A nutrient-rich substrate is beneficial. Eriocaulon cinereum has a fine root system that benefits from substrates like aquasoil or fine sand mixed with nutrients.
• Temperature and pH: It thrives in a temperature range of 20-28°C (68-82°F) and prefers slightly acidic to neutral water (pH 5.0-7.0).

Care and Maintenance

• Trimming: Regular trimming is necessary to maintain its compact shape and promote healthy growth.
• Propagation: Eriocaulon cinereum propagates by producing small offsets or plantlets around the base of the parent plant. These can be carefully separated and replanted.

Aquascaping

• Uses: It is commonly used as a foreground plant in aquariums due to its small size and unique appearance. Its rosette shape adds texture and interest to aquascapes.
• Companion Plants: Eriocaulon cinereum pairs well with other foreground and midground plants. It can be combined with plants like Hemianthus callitrichoides (dwarf baby tears) and Eleocharis parvula (dwarf hairgrass) for a diverse and visually appealing aquascape.

Challenges

• Water Quality: Maintaining stable water parameters is crucial for Eriocaulon cinereum. Fluctuations in water quality can lead to poor growth or the plant melting.
• Light and CO2 Balance: Ensuring the right balance of light and CO2 is essential to prevent algae growth and promote healthy plant development.

Eriocaulon cinereum is a striking addition to planted aquariums, offering unique texture and color. With proper care and attention to its specific needs, it can be a rewarding plant for aquarists looking to create beautiful and diverse aquascapes.