
Ok. So I ballsed up ~ again ~ and ended up pitching my yeast into around 34c wort. Safale, but even that can't be expected to perform miracles. Yet it did.
My air lock was going like a train for two or three days. This morning? Nothing. This evening? Nothing.
I've just read all the 'Stuck Fermentation' remedies and am preparing to buy some Yeast Vit (along with a truck load of yeasts and anything else I can think of that I'll wish I had to hand when Brew 3 goes to rat shit) I'm Trying to remain philisophical, but this is starting to take the piss!
So, anyway; I got my Up / Down Thermometer and stuck it next to the FV, just to see. Just looked. Sure enough, with the rain, the room temp has dropped from 20c to 18c. Maybe accounting for the lack of bubbles?
'Obvious' answer; Throw the thermostat to minimum. Switch on and see if I can gain a couple of degrees. Yeah? Try this!
I threw the stat to minimum and hit the button. Instantly the air lock roared and gurgled and, I thought, was about to Explode!!! I switched the heater straight off again!

What in hell could have caused that, please? Anyone?
And does that even sound like a 'stuck ferment'?
What's going on now???
Thank you.