Tridacna MAXIMA ULTRA (04.11.2026) 5cm

Tridacna maxima ULTRA – a living jewel for your reef aquarium

Tridacna maxima ULTRA is a marine clam admired for its vibrant colours and intricate mantle patterns. Its extended mantle, framed by the edges of its shell, creates a striking focal point among corals. A maxima clam is a captivating addition for reef keepers looking to bring a different kind of beauty to their aquarium.

Tridacna clams are worth admiring from different angles. Mantle colours can appear different when viewed from above or through the front glass. The spectrum and direction of your aquarium lighting also influence how those colours are perceived.

Keeping Tridacna maxima in a reef aquarium

A maxima clam is best suited to an established reef aquarium with stable water conditions. Symbiotic algae called zooxanthellae live within its mantle and provide a substantial part of its energy through photosynthesis. Suitable high-intensity lighting is therefore essential for its long-term care.

• Lighting: strong reef lighting, with gradual acclimation to the intensity in your aquarium.
• Water movement: moderate flow without a pump jet hitting the mantle directly.
• Substrate: secure rock or a clam cradle that allows natural attachment.
• Water chemistry: stable salinity and temperature, with regular monitoring of alkalinity, calcium and magnesium to support shell growth.
• Tank mates: keep clear of stinging corals and animals that nip at clam mantles.

Where should you place a maxima clam?

Choose a well-lit location where the clam can sit securely and fully extend its mantle. A small, separate piece of rock or a clam cradle provides an attachment surface and makes it easier to move the clam together with its base if necessary. Never pull an attached clam away by force, as this can damage its byssal apparatus.

Feeding and ongoing care

Tridacna maxima receives energy from its symbiotic algae and also filters small food particles from the water. Suitable phytoplankton can supplement its diet, particularly for smaller specimens, but cannot replace adequate lighting. Add food to the water column according to the product instructions.

Allow your clam time to settle after introduction and avoid repeatedly changing its position. As its shell grows, monitor calcium and alkalinity consumption and adjust supplementation to the needs of your reef system.

A Tridacna maxima ULTRA from JMCorals.com brings an eye-catching living feature to your saltwater aquarium, with beauty to enjoy every day.