ACI Sunrise Cyphastrea Coral (Cyphastrea sp.) is an encrusting, hardy coral that prefers low to moderate light and moderate, indirect flow. Aim for 40–100 PAR and avoid direct, high-intensity LEDs to prevent bleaching; start shaded and move it out slowly over 2–3 weeks. Provide random, non-laminar flow to keep detritus from settling on its surface; too much blast can cause tissue recession. Target feed 1–3 times weekly at night with fine foods (rotifers, reef chili/roids, powdered zooplankton). Keep stable water: temperature 75–78°F (24–26°C), salinity 1.025–1.026, pH 8.1–8.4, alkalinity 8.0–9.5 dKH, calcium 400–450 ppm, magnesium 1250–1350 ppm, nitrate 5–15 ppm, phosphate 0.03–0.10 ppm. Test weekly and track trends; this coral dislikes rapid swings, especially in alkalinity and light.Place low to mid in the tank on rock with room to spread; it grows as a crust, so consider an isolated “island” to manage overgrowth. It’s generally peaceful and lacks long sweepers, but give 2–3 inches from neighbors to avoid slow encroachment and allelopathy. Acclimate with a dip for pests and a 45–60 minute drip. Use light acclimation (reduced intensity or shorter photoperiod) after introduction. Troubleshooting: paling/bleaching suggests too much light or too little nutrients; retracting polyps can indicate pests, low flow, or unstable parameters; edge recession often points to trapped detritus or alkalinity swings. A PAR meter (or phone-based proxy) and consistent maintenance will keep color and growth steady.