Crocea clam and white spots

[tmcgaughey]

I have about a 3in clam and looks healthy except for small white spots about the size of a pencil on the mantle. They showed up about two days ago and I've had the clam for about a month

is this due to lack of light? If so, i'll just move him closer to the MH

 

[a4twenty]

very hard to say without seeing the clam, please post a pic