Lacto Buchneri, how hot can I go?

[Wernerherzog]

So I decided to wrap my 2000 ml starter lacto flask with a heat blanket and made it snug with a towel. Didn't realize that heat source could get so hot! It bumped up the temperature to 145 degrees. Did I just fry my lacto? Starter has been going for four days before the heat spike at around 90 degrees and it doesn't taste any more tart than normal apple juice would.

Should I dump and restart because of this temp hike?

 

[Oldsock]

30 minutes at 145F is called "vat pasteurization" apparently, I doubt the Lacto survived. ~115-120F is as high as I've seen anyone suggest for growing Lacto.