lets see maxs require intence light to thrive in captive conditions...halides are recomended...but t5s with a good reflector have had some sucess latley...the brown or gold maxs require a bit less light, how much less i dont know...
Small clams need to be feed a small in size food source that is measured in microns...live phytoplankton is the food of choice either DTs or liquid life or home brewed cultures...
Consistant high quality water conditions...low to nil on nitrates and phosphates...calcium in the 400ppm range and alkalintiy thats either natural sea water or higher...as long as its in the upper range and balanced and consistant...
and an enviroment where its mantle is blown around by the curent, fish that dont nip, and the absence of clam parasites...syrmidal snails being the main culpret...