This SPS (Merulinidae) coral is rated easy difficulty and requires PAR levels of 50–200 with medium flow. It derives most of its nutrition from photosynthesis via its symbiotic zooxanthellae. Best placed in the anywhere area of the tank, it has low aggression.
Quick facts
| Type | SPS (Merulinidae) |
| Difficulty | Easy |
| PAR range | 50–200 |
| Flow | Medium |
| Feeding | Photosynthetic |
| Growth rate | Moderate |
| Aggression | Low |
| Placement | Anywhere |
Lighting needs
Provide PAR levels of 50–200 µmol for optimal health and coloration. This coral is forgiving of imperfect lighting and adapts to a range of intensities. When first placing the coral, start with lower light intensity and gradually increase over 1–2 weeks to prevent light shock.
Spectrum matters as well: a mix of blue (420–480 nm) and white light produces the best fluorescence and growth. Many hobbyists run heavier blue spectrums to enhance coral fluorescence while maintaining enough PAR for photosynthesis.
Flow requirements
Medium, indirect flow works best. The coral should sway gently in the current without being pummeled. Avoid direct powerhead output aimed at the coral. Alternating flow patterns (wave mode) are beneficial for nutrient delivery and waste removal. Adjust flow based on polyp extension—if polyps remain retracted, flow may be too strong.
Placement
Place this coral in the anywhere area of your aquascape. This coral has low aggression and plays well with neighbors. Standard spacing of 1–2 inches is usually sufficient, though growth patterns should be monitored over time.
Secure the coral to rockwork using reef-safe gel super glue or epoxy. Ensure it is stable and won't topple—falling corals get stressed and damaged. Let the glue cure briefly before returning the frag to the tank.
Feeding
This coral is primarily photosynthetic and derives most of its nutrition from light. Supplemental feeding is not strictly necessary but can boost growth and coloration. Broadcast feeding with phytoplankton, amino acid supplements, or dissolved coral foods benefits the colony. Maintain appropriate nutrient levels (nitrate 2–10 ppm, phosphate 0.02–0.08 ppm) to feed the symbiotic zooxanthellae.
Fragging
Fragging SPS corals is straightforward: use bone cutters or a Dremel with a diamond blade to snip branches. Cut at a natural branching point. Glue the frag to a plug with gel super glue—SPS corals encrust over the glue quickly. Recovery is usually fast (days), and the parent colony seals over the cut site. Frag during good health, never when the colony is stressed.
Common issues
- Tissue recession or bleaching: Usually caused by unstable parameters, excessive light, or chemical aggression from neighboring corals. Investigate recent changes in lighting, dosing, or new coral additions.
- Failure to extend polyps: Check flow strength (too strong?), lighting intensity, and water quality. Recent dipping or transport stress can also cause temporary retraction.
- Pests: Inspect for flatworms, nudibranchs, or other parasites. A prophylactic coral dip (Coral Rx, Bayer) upon introduction prevents most pest issues.
- Slow growth: Ensure adequate feeding, stable alkalinity (8–11 dKH), calcium (400–450 ppm), and magnesium (1300–1400 ppm). SPS corals especially need stable, consistent alkalinity for skeleton building.
Frequently asked questions
Is this coral good for beginners?
Yes, this is an excellent beginner coral. It is forgiving of parameter fluctuations, adapts to various lighting and flow conditions, and recovers well from minor mistakes. It is a great confidence builder for new reef keepers.
What PAR level does this coral need?
Aim for PAR levels of 50–200 µmol at the coral's position. Use a PAR meter to verify actual light levels in your tank, as fixture specs and manufacturer claims often differ from real-world measurements.
How fast does this coral grow?
Growth rate is moderate. Factors that influence growth include lighting intensity, flow, feeding regimen, and stable water chemistry. Consistent alkalinity and calcium are the primary drivers of calcification rate in stony corals.
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