Well that never worked worth a hoot. All 3 clams are infected again. Stringy snot coming from the pinched mantle portion. Same places as before the freshwater bath.
So, in they went again tonight, for another 1/2hr. Poor clams.

Back in the tank and looking ok, for what they went through. The crocea seems to not even be bothered by the freshwater.
I read a bunch on Barry,s forum, regarding excessive iron from phosphate removers and pinched mantle. So out comes the Phosban,

, in goes extra carbon. Wish I had some Poly Filters or Chemi-Pure.