Disc Coral

About

Disc coral (Turbinaria reniformis) is one of those corals that rewards a second look. The colony grows as broad, flat plates that can stack into tiered formations, giving it an almost architectural quality in the aquarium. The surface is typically yellow-green, often with a lighter or contrasting color at the margins, and the individual corallites are widely spaced, thick-walled, and either flush with or slightly raised above the surface. Small details that help distinguish it from similar plating corals. In the wild, it ranges across the Indo-West Pacific from shallow fringing reefs down to around 40 meters, and it's notably tolerant of turbid, low-clarity water in its natural habitat. That background translates well to the home reef tank, where it performs solidly under lower light levels that would leave many other SPS corals unhappy. Moderate flow seems to suit it best. Enough to keep detritus from settling in the recesses between corallites, but not so strong that it stresses the tissue. Placement matters with this one because the plating growth form means it can shade out neighbors below it as it expands. Overall it's a manageable choice for a reef keeper who has some experience dialing in flow and light but wants a coral that isn't going to demand constant fussing.