So i did a big water change and clean up sunday looking in the tank yesterday I thought I killed my sally foot crab, but it was just the mold shell so my question is do I leave it in for him to eat or remove it, someone said its good for them to eat
It's just chitin (glucose more or less). Probably less palatable than a dead crab with all the meat. Also, oz for oz my guess is that it creates less N-based products than meat.