Clam Help needed

Just bought this clam about two week ago, opened up nicely. Now clam opens his shell but is not comming out over shell edge. Water is RO/DI, NO2 0, N03 10, KH 8, Ca 380, SG 1.025, Mag dead on. 90gl tank, with 10 gl weekly. Doing 25 gal tommorrow.

Was feeding Reed Phyto live just finished bottle, now DT's for three days. On live rock about mid tank level, lights are 400 watts LED.

Occupants are 2 clowns, 2 pajama cardinals, yellow tang, blue hippo tang, three strip damsel, blue devel damsel, jewel damsel, Green Mandrian, 3 fire shrimp, 12 blue leg crabs, a few scarlet hermits, large green brittle star, two serpent stars and Orange Linka. If I can catch the jewel damsel its gone, and would be adding a Copperband butterfly. Will also be adding an Marshell Islands Electric blue hermit and Red serpent star and removing the Green brittle star.

Currently additives are ESV 2 part, Kent iodine, In the past used Fuji Gold and Seachem Reef Builder. Started using the 2 part when got clam as Calcium dropped too quickly with Fuji Gold with old clam that died. I have a Calcium Reactor that I am setting up tommorrow and Kalk Reactor that I have not set up yet.

Filtration is a wet/dry using bioballs. Water is passed through blue pad, then carbon, then blue pad again, then to the bioballs, then sponge then into sump with Seachem deNirate, In-sump skimmer, back to tank passing UV light.

Water is circulated in tank with three Vortech power heads on the back wall, 2 at 1/4 speed and 1 at 1/2 speed.

I do not want to lose this clam. Any suggestions are welcome
 
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from the photos you posted in your other thread it looks like something may be picking on the clam but the photo was very large so i cant get much detail. also being such a new clam, the clam may not have handled shipping well or have been weak
 
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