Its a hole in his foot. I got these two but neither would attach to rocks. One came out of someone else's tank and was not attached when I got him. I thought that when they get older they don't attach anymore.
The four that are in good shape are all attached. These two with the holes were on a flat rock but never attached.
Yes those are the snails I have so that could be my problem.
I do feed some phyto and some other clam food. Don't think thats the problem though the others are great.
It could be a worm of some sort thats why I moved them to another tank.
I can post a picture later, but it is basically a hole in the foot about the size of a nickel.
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150 Gal system 3'x3' 400W M/H, Bekett skimmer, Dart return,1/4 HP Chiller
180 Gal Drop tank, LED lights, Bubble master 250 skimmer,Hammerhead on a closed loop, Speed wave return.
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