whats wrong with my crocea?

[Jarett]

i recently bought a 2" crocea clam, i had set it on the bottom of the tank to get used to the lights. when i got it, it opened up right away and was doing great.yesterday it fell over onto its side. now its all shrivled up inside and not looking good. it opens up a little bit, but all the tissue is inside the shell. the foot is not out either. it looks like it is starting to shrink inside the shell.
what can i do to help it? if anything?

i did move it up in the tank about midway. the tank has a 250 mh(14k), with vho's. there is very low flow where the clam is.
thanks

 

[mbbuna]

sorry but i dont think there is anything you and do for the clam. when they reach the point that you described they are pretty much gone

 

[Jarett]

so what caused it to do this then. (vague question i know).
i check water quality and everything is good
temp 79(chiller)
calcium 400
kh 7(on the lower side)
ph 8.0
nitrates 0
amonia 0
nitrite 0

dont want to take chance with another one until i get it figured out

 

[mbbuna]

its hard to say. the clam could have been very weak and starving when you got it.