Identification
This species produces numerous narrow, grass-like green leaves from a compact basal growth point. It is commonly sold for aquarium carpets under the name dwarf hairgrass. Eleocharis species can be difficult to separate without flowers or detailed examination, so the identification here follows the supplied product label rather than relying on the images alone.
Planting
Remove the plant from its growing medium, rinse away loose material, and divide the clump into several small portions. Plant each portion shallowly in the substrate, leaving the growing point above the surface. Spacing the portions slightly apart encourages runners to fill the gaps and reduces the risk of buried or decaying leaves.
Aquarium care
Use moderate light, a suitable planted-aquarium substrate, and a consistent supply of nutrients. Carbon dioxide is not always essential, but additional carbon generally supports faster establishment and denser spreading. Keep the water and substrate free of accumulating debris, especially while the carpet is becoming established.
Trimming and spread
Once established, the plant spreads by runners and gradually forms a low lawn. Trim tall or untidy growth with clean scissors, removing loose cuttings so they do not shade the carpet or collect debris. Avoid repeatedly uprooting the runners, which can slow coverage.
Limitations
Growth rate and final height vary with light, carbon availability, substrate, nutrition, and planting density. In weaker conditions, Eleocharis acicularis may remain sparse or grow taller rather than forming a compact carpet. The supplied label supports the species identification, but photographs alone cannot verify every distinguishing taxonomic feature.
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