Carpeting Halimeda (Halimeda Opuntia)is a calcified member of the popular Halimeda family, and is a green macroalgae. It gets its name from the thick carpeting growth pattern it features.
This algae is capable of living under low-moderate light, it will grow strongest in moderate to high lighting. All macros present some risk of going sexual and releasing carbon dioxide into you aquarium. However, the risk of adverse pH changes from the release of carbon from this species is fairly low. Because this plant uses calcium to grow, you should keep your tank within 350-450 ppm of calcium for best results.
We will send you a piece that is at least approximately 27 cubic inches. This species can grow to just about any size as it expands, but it does so slowly and is easy to manage with yearly pruning. It can be divided or pruned by simply ripping off a chunk of the plant as it grows. If the base portion of the plant is retained it can be used to start growth again in another area. The macroalgae is likely to appear pale on arrival, that is normal.