[jnarowe]

OK. So I pulled an 8" teardrop out of the tank during lights out this morning.

It does not react well to being tapped on in terms of closing up, but on about the 4th tap, it did squirt me. The mantle still has decent color but does show signs of some kind of problem. A few of the actual teardrops seem to be lifting. The clam appears to be gaping a bit too.

No pests found on it or around it. Something to note is that all the clams look stressed but are spread out over a wide area up to 7' apart. There are a couple of strands of some sort of filamentous string coming from the mantle as well. I am going to do a battery of tests now to see if there isn't something I am missing regarding water quality.

I will get the poly filters in, but I am concerned that I may be too late. I have a 40g QT set up with half tank water and half fresh water and I am going to put theteardrop in that to see what happens. If it opens up well over the next 24 hrs. all clams will be pulled from the display.