your chili coral is non photosynthetic coral and needs to be fed or it will perish , when happy should have bright white polyps and high polyp density.
these corals do not fair well with any noticable phosphate levels or film algae takes them over but if phosphate levels are low then they can handle bright light but prefer low to no light at all
mine prefer high flow
good luck its a advance coral for sure and not great for new tanks because of its feeding habits and low nutrient requirements