Ultra Maxima Clam

Ultra Maxima Clams rank among the most striking and sought-after giant clams in the reef-keeping world. Each specimen displays an exceptionally deep, velvety mantle coloration that creates dramatic contrast against surrounding corals — a true centerpiece in any high-end reef system. Available in a range of sizes, from compact specimens with plenty of growing ahead of them to mature clams already showing full, rich coloration. Maxima clams are prized not only for their beauty but also for their fascinating biology. Their symbiotic zooxanthellae allow them to harness light for energy, which means strong reef lighting helps intensify both coloration and growth. When placed securely on rockwork, they quickly attach and become a permanent living display of natural artistry. Maxima clams naturally live in shallow reefs and demand strong illumination. • PAR Range: 300–500 PAR ideal • Spectrum: Blue-heavy reef spectrum (420–470nm) enhances mantle color • Placement: Upper rockwork, directly under primary light source Insufficient light leads to faded color, poor mantle extension, and eventual starvation.