Help! trying to help friend w clam!

[Ralph ATL]

please help! Thanks!


link to pic:
http://s402.photobucket.com/albums/pp109/scorpinga/?action=view&current=DSC_0062.jpg


I bought a crocea clam from a LFS this past saturday. I dipped him in Seachem reef dip per the directions and then acclimated him to the tank. He was open very nicely for the first 4 days (saturday, sunday, monday & tuesday). However, on Wednesday he started to close up. He is not entirely closed, however he is not opened as nicely as he had been. He had his foot planted when I originally place him, however his foot came loose. I know he requires a lot of light so I moved him toward the top on Thursday. He is now about 5" from the waters surface. I need help, I really don't want to lose him. Here are the tanks parms:

34 gallon Red Sea Max running manufacturer lighting
Ca = 480
Kh = 13
Mg = 1100
PH = 8.1
No3 = 1
Salinity = 1.026
temp = 76.4

By the way the clam is about 3" to 3.5" wide.

 

[almees]

I would say that something might be niping at the clam... Mine is going trough the same issue. He was happy, now does not extend his mantle.

All permineters are good.

I have seen one of my fish nip at his mantle....

So, watch your fish and see if that could be it, also check for pyramid snails they are mainly out at night.

I'm really new to this clam stuff but, this is what I have been able to gather.