Elkhorn coral
Acropora palmata
This coral forms large elkhorn-shaped colonies with thick, rounded branches. Color ranges from light brown to yellow. It grows rapidly in clear, turbulent waters. Its polyps are small and retracted during the day. It plays a key role in reef building. In aquariums, it is very demanding, requiring intense light and strong flow. It is sensitive to bleaching and diseases.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 25–28 |
| pH | 8.1–8.4 |
| GH | 8–12 |
| KH | 8–12 |
| Salinity | 1.024–1.026 |
| NO₃ | ≤ 5 |
| PO₄ | ≤ 0.05 |
Care
Care notes
Temperature 25-28°C, pH 8.1-8.4, salinity 1.024-1.026. Very high lighting (LED or metal halide) and strong flow. Calcium 420-450 ppm, magnesium 1300-1350 ppm. Nitrates < 5 ppm, phosphates < 0.05 ppm. Feeds mainly through photosynthesis, but may accept fine plankton. Minimum tank volume 400 liters. Avoid coral-eating fish. Fragile during transport, requires slow acclimation.