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Coralline Algae
Corallinales spp.
Plantae›Rhodophyta›Corallinophyceae›Corallinaceae
📍 Worldwide on tropical and temperate reefs
Calcified encrusting algae that paints live rock, glass, and equipment in shades of pink, purple, and white — the hallmark of a mature, healthy reef. Requires stable calcium (400–450 ppm) and alkalinity (8–9 dKH). Does not need dedicated lighting but benefits from reef-level light. Spreads naturally from live rock and purchased plugs.
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Quick Facts
- note
- cover back glass to slow growth on display panels
- role
- highly beneficial — reef maturity indicator
- calcium
- 400–450 ppm
- magnesium
- 1250–1350 ppm
- alkalinity
- 8–9 dKH