Help to identify top floating substance

[SimPilot]

On my 40th batch and this substance appears to float on the top. Fermentation is complete (1120 to 1030)

To me, it appears that Fermaid-O wasn't used up all the way. That also could mean my scheduling / recipe requires a bit too much Fermaid-O....

Any thoughts.

NOTE - color is more yelloish. LED light makes it look like spores of mold.

 

[lumpher]

Looks ok to me. I'd say the floaties are yeast, protein, maybe some fermaid, and other misc junk. Nothing to worry about. I don't see any telltale pellicles.

 

[SimPilot]

I'm not worried about pellicles, but incorrect application of nutrients. Typically after fermentation top looks clear with nothing floating. But as pictures those items worry be and my liver.

 

[MightyMosin]

That's 11.8% and likely is not done. I don't know what is on the top but I have never seen it before. It isn't necessarily bad; I just don't know what it is.

I'd likely rack from under it and leave it all in the original fermenter and try to restart a stuck fermentation.

You said this is your 40th batch. I don't know if this is some bacterial infection or not. Do you change between different sanitizers or only use the same one over and over? I use Star-San but periodically switch to Iodophor so that I am not promoting a bacterial strain that is resistant to a specific sanitizer. Something to consider.