Crystals in cider?

[Ripwind]

This is my third batch ever, but my first time using honey. I'm at about a month into the primary using Mott's / honey in a 5 gal carboy. I used potassium sorbate a week or so ago, and slammed some more in today to try and stop fermentation. However, today I noticed some weird crystals forming on the walls of my carboy. Too much potassium? Or acid crystals? Something else?

 

[RPh_Guy]

I suspect it indeed may be sorbic acid crystals, although I've never seen anything like that so I'm not sure.

You cannot stop an active fermentation with potassium sorbate.

Welcome to HBT!

 

[Ripwind]

Good to know, thanks for the feedback and welcome! =)