I have two clams that seem to be doing very well - especially a miaxima that is starting to look awesome. That is a bit surprising because a few folks thouhgt it might not survive under my T5s. But I add live phyto 3xs per week and, of course, the lighting. For samall clams that have not anchored to anything, some remove the clam and put it in a bowl with phyto to feed it. I have never done it as my smaller clam, the maxima, has its foot locked into the LR.