Black Spots on Chalices

Clarkii01

New member
Hey everyone, I picked up some chalices yesterday at a big swap we had in Ohio. They were doing just fine with the rest of the frags I purchased on a frag rack near the top of my system. I offered them some food, then a little bit later moved them down to the sand bed with the rest of my chalice collection. Shortly after that two of the frags developed dark spots on the skin and started showing some skeleton. Can anyone help me here? I want to attempt to stop this from spreading. Thanks, Jim
 
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