Smell it.. You will know if its dying.

if you have hermits or nassarius and it is on its way out they will be all over the clam.
I know when one of the clams in my store is going to die by the way the inverts act..they are like sharks on a blood trail.

I've done it to a squamosa a few times over the years always worked like a charm if things didn't seem right, about 15 mins I think I did, google freshwater dipping clams lots of people do it usually for pinched mantle issues but I thought my clam was gonna die more than once and it saved it, better than tossing in the trash in a few days but that's upto you

Actually 30 mins is what they recommend

OK...I fresh water dipped it for 30 minutes. Will look first thing in the morning to how it's doing.

I figured I've got nothing to loose at this point.

Freshwater dips are fine and recommended for pinched mantle. I've done this quite a few times over the years, I toss it in some RO water for 30 minutes. Saved most that way.

Give it a few days to start recovering but hopefully it works out.

I should google things before opening my big mouth
once again, I put my foot in my mouth
I just would never think of putting a clam in fresh water
hope it works
I have now learnt something new

Now that's something I didn't know.

http://i1304.photobucket.com/albums/...ps1ce59065.jpg

Is it dead? This is a shot of it this morning.