Derasa Clams are easy to keep when provided with proper light, calcium levels, and food. Derasa Clams may be kept under strong fluorescent lighting (4-5 watts per gal.), however they will thrive under metal halide lighting. Calcium levels should be kept at 400-450 ppm. The use of Kalkwasser Mix, or a calcium reactor is a tremendous benefit to all clams. They need the calcium to grow and build their shells.
Although clams consume dissolved organic substances and inorganic nutrients such as ammonia and nitrate you should supplement their diet with marine snow, and phytoplankton.
When placing clams make sure to protect the byassus opening on the bottom of their shell by burying it in the sand, or resting it on top of a rock. Do not try to move the clam once it has attached to a rock. You could kill it.