Can someone please tell me what this is? I've never seen this happen before and my partners haven't either. It seems like it came from one plant and started spreading. I could be wrong. Here is a photo. Please help. I've already just chopped down two plants because of it. It seems to only be affecting my royal kush clones. I have a headband seedling next to it that is unaffected.
Wash in a 10% bleach and warm water solution, if mold it will turn to mush, best to locate the mold source and kill!