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Chaetomorpha
Chaetomorpha linum
Also known as Chaeto, Spaghetti Algae, Chaeto Algae
Plantae›Chlorophyta›Ulvophyceae›Cladophorales›Cladophoraceae
📍 Worldwide in shallow tropical and temperate seas
The most popular refugium algae in the reef hobby — tumbling masses of stiff, wire-like bright green strands. Grows rapidly, exporting nitrates and phosphates as it's harvested. Provides a habitat for copepods and amphipods that migrate into the display tank as live food. Extremely hardy.
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Quick Facts
- flow
- moderate tumbling
- role
- beneficial — refugium
- export
- harvest regularly to remove nutrients
- placement
- sump refugium
- lightLevel
- medium (24h or reverse cycle)
Water it likes
- ph
- 8.0–8.4
- hardness
- 8–12 dGH
- temperature
- 64–79°F (18–26°C)
Legality
No state or federal restrictions on record for this species.
Not legal advice, and possibly incomplete or out of date. Rules vary by state and locality and change over time — always confirm the current regulations with your state wildlife or agriculture agency before buying, keeping, or shipping this species.