i just cleaned the clam that is not doing well...and darn nasty, i found MESSIVE Pyramid snails at the bottom of the clam ..at least 50+ of those thing.. at first i thought those were part of the "leg tissue"...
so anyway, there's no way to be 100% sure there's no more Pyramid snails every time you add new clam in your tank since you can only pick out the ones you see but don't know if there are some more hiding inside ?
for those ppl who have like 20+ clams, there no way to take all clams out every night just to clean those snails...and sounds like there's no short cut ?!?