Quote Originally Posted by prof
What kind of clam is it? How big is it? Not all clams will attach to the rock. Small clams need to be spot fed until they are big enough to sustain themselve via photosynthesis.
+1

Crocea clams burrow into rock..... make sure there is PLENTY of light where you place it. Small clams can be spot fed..put the clam in a small container and put phytoplex or something similar in the container and they will filter the water. You could turn off your skimmer and feed directly into the tank as a 38g is pretty small. If the clam is larger than say 2 to 2-1/2 inches, then direct feeding is not necessary as they will get enough nutrition from photosynthesis. To direct feed in the tank, get a syringe (walgreens sells the ones that you dose medicine for children in-- they work great) and connect a piece of airhose to it....use a small piece of sraightened coathanger to attatch to the airhose so that it is rigid. then you can direct the phytoplex over the clam. I feed my clams about once per week or so, as they are over 3 inches, in this manner. BTW, clams need a very well extablished tank to survive, and the little ones seem to not fare so well, larger ones are better survivors.... Good luck, Erick..