I'm just not sold on the idea myself, and it's a PITA. Clams live in mostly clear water, with a low concentration of food, they filter water all the time and get enough plankton to survive. target feeding like that is certainly not like their natural environment... so I like to keep it more natural but, to each his own I guess. hey, find something that works for you and the clam and then stick with it.
-skeletor-