Eriocaulon Aquaticum care guide
Eriocaulon Aquaticum (Eriocaulon aquaticum) — high light, 18-25 °C, pH 5-6.5, CO2 recommended.
Compiled by Aquairi from published sources · Published · Updated
Overview
Eriocaulon Aquaticum (Eriocaulon aquaticum) is an aquatic plant of the family Eriocaulaceae, listed in the Aquairi knowledge base as an advanced-level species. It is typically grown under high light with pressurised CO2 injection on nutrient-rich aquasoil. A stunning rosette plant with narrow, translucent leaves radiating in a star-like pattern. Requires soft, acidic water with CO2 injection and strong lighting, making it a true challenge for advanced aquarists.
Taxonomy
- Family: Eriocaulaceae
- Genus: Eriocaulon
- Scientific name: Eriocaulon aquaticum
- Common synonyms: Pipewort
Habitat
Eriocaulon is a genus of pipeworts (Eriocaulaceae) with around four hundred species worldwide, many in seasonally flooded fields and acidic, soft-water habitats of South and South-East Asia and the Americas. In the Aquairi knowledge base, populations associated with this form are recorded from North America, Europe.
Growth requirements
- Lighting: high
- CO2: recommended
- Temperature: 18-25 °C (64-77 °F)
- pH: 5-6.5
- GH: 0-4 °dGH
- Substrate: nutrient-rich aquasoil
- Maximum height: 15 cm
- Growth rate: slow
- Recommended placement: foreground
Placement
Midground accent forming a tight rosette of narrow leaves. A nutrient-rich substrate, soft water and CO2 are required for stable submersed growth. In the Aquairi knowledge base this form is recommended for the foreground under high light with pressurised CO2 injection, using nutrient-rich aquasoil.
Propagation
Flowering produces side shoots that can be separated from the parent rosette; division gives the most reliable propagation in the aquarium. Documented propagation techniques for this entry include: division of the parent plant.
Common issues
Sensitive to disturbance — replanting an established rosette often triggers melt, after which the plant slowly recovers. Soft, mineral-poor water with adequate CO2 reduces stress responses.
Propagating Eriocaulon aquaticum (Pipewort)
Overview
Eriocaulon aquaticum, or pipewort, is a perennial rosette plant in the family Eriocaulaceae with narrow, grass-like leaves radiating from the base. It is an isoetid, rooted bottom plant rather than a stem plant, and in the wild it inhabits bogs, ponds, lakes, marshes and slow-flowing rivers with soft, acidic water. In the aquarium it is an advanced species that rewards strong light and stable, low-mineral conditions.
Propagation Method
Submerged Eriocaulon is propagated vegetatively in two ways without going through a flowering cycle: splitting the mother rosette, and separating lateral plantlets. A plant is ready to divide once it reaches at least half the size of a full-grown specimen. After cutting, a half may grow a single new crown that merges back into one adult plant, or it may produce several plantlets clustered around the crown.
Step-by-Step
- Wait until the rosette is at least half the size of a mature plant.
- Uproot it carefully — the crown is short but the root system is large.
- Split the mother plant straight down the middle with a sharp blade.
- Replant each half, or separate any cluster of side plantlets that has formed.
- Plant the plantlets individually with space; each grows into a full-sized plant in time.
- If a cluster crowds, uproot again later and separate the plantlets.
Conditions for Healthy Growth
Eriocaulon grows better with higher light and CO2 than basic aquarium plants. It is KH-sensitive and should be kept in low-alkalinity water below about 3 dKH, matching the soft, acidic conditions of its natural habitat. Despite the short crown it has a large root system, so use a nutrient-rich substrate that is not too thin — at least about 2 inches deep for good size.
Maintenance
Pipewort is slow-growing and is not topped like a stem plant. Maintenance mainly means keeping water soft and acidic, light strong, and CO2 stable, then periodically lifting and dividing crowded clusters so plantlets do not suffer from overcrowding.
Common Challenges
The most common problem is crowding: when a divided half produces multiple plantlets, the dense cluster can stunt itself, so the clump must be uprooted again and the plantlets separated. High alkalinity and unstable parameters are the other frequent causes of decline in this demanding plant.