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Tridacna maxima
A stunning giant clam with brilliant blue, green, or purple mantle patterns. Photosynthetic — requires strong lighting. A showcase centerpiece for reef tanks.
Fin Rot
Fins look frayed, ragged or are visibly shrinking with white or red edges.
Old Tank Syndrome
Water quality slowly worsens over months or years despite regular small water changes.
Fish Gasping at Surface
Fish hover at the surface, breathing rapidly. A possible oxygen emergency.
Common invertebrate problems
Stocking calculator
Compatibility checker