I started a fermentation 24 hours ago and it has increased the temperature from 22°C to 28°C in the last 8 hours. Additionally the gravity dropped from 1.060 to 1.024 already which seems insanely fast for a brew that is supposed to end at 1.017.
I'm using a Fermzilla with pressure kit and put the insulation jacket on immediately, I guess that's where the temperature rise came from?
Is this gravity drop normal? It seems insanely fast to me.