I walked into the room after 8 hours and temp had topped out at 146. I was losing a tremendous amount of heat out the top.
I covered the top of the top with cling wrap and laid beach towels over it to insulate. After a few hours I had temps up to 205-208, which I allowed to run for 6 hours. I’m feeling pretty good that I got a decent kill on pathogens with that temp.
After that I pulled the logs out in the bags to cool to 80 or so, took about 4 hours, added 2 cups of spawn per bag, sealed and shook per the article.
Packed up and ready to go
3-4 weeks now in the garage after which I will bury when fully inoculated. Fingers crossed. Best part is I have some spawn left over so I can go do that dying oak tree in the wooded lot next door 
Oh hell yeah, mycology and an immersion circulator in the same post. What are you inoculating with?
Thanks! One of the fun (?) things about this is it takes a couple of years to know if it worked. Maple is “not recommended” for the species per north spore so it’s a bit of a gamble
Totally, and relative to the input cost and potential reward it's a reasonable gamble. Worst case scenario, you stick some logs in the yard and they decompose, nbd, you spent a few hours enjoying a hobby. Best case, mushrooms for years.
Nice, good luck!!
If you ever have to scale up for some reason, I've drilled a hole for the sous vide circulator into a big insulated cooler, which I fit with some rubber rings. It'll hold temperature overnight easily.
Thanks! That’s a good tip, I’ve thought about doing something like that for beer. Never got around to it though.
I’m good on sterilizing logs for a while but I think I might fuck around with some agar next and then I’ll need sterilized substrates. I would usually just buy them ready to go but now having the bags and everything it might be fun to try to go from start to finish with it.