TSA Firefly Zoanthids Coral

Firefly Zoanthids Coral (Zoanthus sp.) thrives under stable, clean conditions with moderate resources. Target temperature 76–80°F (24–27°C), salinity 1.024–1.026, pH 8.1–8.4, alkalinity 8–9.5 dKH, calcium 400–450 ppm, and magnesium 1250–1350 ppm. Keep nitrate 2–10 ppm and phosphate 0.03–0.10 ppm; test weekly and avoid rapid swings. Provide moderate light (PAR ~80–150); start low and slowly increase over 2–3 weeks to prevent bleaching. Use moderate, random flow to keep polyps clean and deter detritus and algae film.Place colonies low to mid in the tank; begin on the sandbed or a lower rock and move upward if color dulls. Leave space from stinging LPS/SPS. Zoanthids spread quickly—use an isolated rock “island” to contain growth and prevent overrun of neighbors. Generally peaceful, but avoid contact warfare and keep room for maintenance access.Feeding is optional but beneficial: 1–2 times weekly broadcast fine foods (phytoplankton, rotifers, reef powder). Target feed lightly to avoid fouling. Acclimate by temperature equalizing, then 30–45 minutes drip acclimation; dip for pests (zoa-eating nudibranchs, sundial snails) before adding. Troubleshooting: closed or shrinking polyps often signal too much light/flow, pest irritation, or unstable nutrients; browned color suggests low light/high nutrients; receding mats point to poor flow or bacterial issues—improve circulation, siphon debris, and perform small water changes. Handle with gloves and eye protection when fragging.