Dwarf hairgrass care
Eleocharis acicularis

Dwarf hairgrass makes a lawn of fine blades.
- Light
- Medium
- CO₂
- Helps
- Where it goes
- Foreground
- Growth
- Moderate
- Care level
- Moderate
- Height
- 2 to 6 in
- Temperature
- 60 to 83 °F
- How to plant
- Split the pot into small tufts and plant them an inch apart
- Propagation
- Runners
In a 20 gallon long
12¾ in tallHow to grow dwarf hairgrass
Dwarf hairgrass makes a lawn of fine blades. It spreads fastest with medium to high light, CO₂ and a nutrient-rich substrate; without CO₂ it still grows, more slowly. Trim it like a lawn once it fills in.
Common problems
- Patchy growth and algae between tufts in low-tech tanks; plant tufts closer and add root tabs.
Light for dwarf hairgrass
Medium-light plants grow best under a planted-tank LED that spans the tank. Check the mounting length against your tank before buying: how to fit a planted light.
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Fluval Plant 3.0 22W
Adjustable mounting range 15–24 in; maker publishes 1,450 lm and PAR at several depths.
Finnex Planted+ 24/7 CRV-24
Fixed 24-in fixture model; fit depends on the supplied legs and tank span.
Plants that grow in the same light
Sources
Plant identity from Wikipedia: Eleocharis acicularis. Heights, temperatures and care are typical ranges in aquariums from common planted-tank practice, not figures from that article. Drawings are our own; photo credits follow.
Photo credits
Real photographs from Wikimedia Commons, resized and cropped to fit; each is used under the license named.
- Dwarf hairgrass Andrey Zharkikh, CC BY 2.0, via Wikimedia Commons
- Amazon sword Brianza2008, CC BY-SA 3.0, via Wikimedia Commons
- Water wisteria Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, via Wikimedia Commons
- Ludwigia repens Show_ryu, Public domain, via Wikimedia Commons
- Anacharis Ernst Schütte, CC BY-SA 3.0, via Wikimedia Commons
- Water sprite chiuluan, CC BY-SA 4.0, via Wikimedia Commons
- Amazon frogbit Cardex, Public domain, via Wikimedia Commons




