
Mosses, floating plants, and macroalgae
Red Gracilaria
Gracilaria hayi
Photo: Coughdrop12 · CC BY-SA 4.0 · Wikimedia Commons
Key facts
- Temperature22–27 °C
- pH8.1–8.4
- Adult size15 cm
- Difficulty★★☆☆☆
- WaterMarine
Full profile
- Family
- Gracilariaceae
- Origin
- Indo-Pacific (cultured)
- Size
- 5 – 15 cm
- Temperature
- 22 – 27°C
- pH
- 8.1 – 8.4
- Salinity
- 1.023 – 1.025
- Difficulty
- ★★☆☆☆
- Water type
- marine
- Light
- medium
- Fertilization
- absorbs nitrates and phosphates from the water
- Growth
- medium
- Position
- loose in the refugium or anchored
- Propagation
- fragmentation
Notes: Edible red macroalgae for surgeonfish and other herbivores, known as “ogo.” It is grown in the refugium to feed the fish naturally.





