I fragged some Idhao grape monti because it was either being stung or getting some other cause of STN. Some of the frags are doing find and some got covered in a mucus right away. I tried blowing it off but the portions with mucus turned grey, a few were have covered and half normal and the mucus half is grey, the other half looks fine. This was 2 days ago. Any thoughts on the cause of this one? I'd like to avoid it in the future.