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Old 05-28-2013, 10:48 PM
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It could be pinched mantle.

My advice is give it a freshwater bath for a few minutes (match temperature). If it is pinched mantle, it should help. If it isn't pinched mantle, at least it won't hurt the clam.

Afraid you will have to google or search for the recommended time for the FW bath as I don't remember that part offhand, sorry!
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Old 05-28-2013, 11:07 PM
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I know you've been having trouble with the amphipods for a while, Have you ever considered putting something out at night in your tank that they'd rather eat than the clam? Sort of like planting marigolds amongst vegetables, but rather than repelling the pods, you'd be giving them something else to munch on? Like maybe a frozen clam from the fish market?
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Old 05-29-2013, 03:26 AM
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Could you put a fish in the tank to help eat the pods? Dottybacks and Wrasses do a fantastic job or maybe a Mandarin if the tank is suitable. I like to have a Halichoeres wrasse in with clams (and SPS) to help keep irritating pods and worms in check. Yellow Coris are a good choice for smaller tanks and tend to be invert safe too (which most Halichoeres aren't).

Pinched mantle usually shows up just in one or two lobes at first, you may indeed have a case of pinched mantle. It's hard to say at this point from the pic. With pinched mantle it is best to act sooner rather than later. A FW dip will not hurt the clam whether or not it has pinched mantle provided you take the appropriate steps to match pH and temperature. Use a digital pH meter for this, drop style test kits are not accurate enough.

"I have crabs" link is good information.
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Old 06-16-2013, 10:29 PM
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an update on the clam. I did 2 freshwater dip at one week interval but it did not do anything. The clam still show some receiding on this area but it is not getting worse.

It seem to be better in the morning and getting worse by the end of the day, so it's wierd. If I cut off a bit of ligth then it seem to improve sometime, sometime not.

This problem has been doing on for a month now, so not sure what it is. I am guessing if it was pinched mantle, it would have got worse?
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