I have all my inlet tubes cut to be flush with the top of the keg, so that an upside down angled keg can blow out almost all the sanitizer.
If you drink beer at the bar that manually cleans glasses they get the "three sink" clean and you're drinking the sanitizer left over from the last sink...
The majority of yeasts require oxygen for growth. In a study of type species from 75 genera, it was noted that only 23% could grow under anaerobic conditions on a complex medium supplemented with ergosterol and a source of unsaturated fatty acids (Visser et al., 1990). Of these, S. cerevisiae...
No. I'm powering mine off of a 12v power supply switched on and off by the PLC. I would go higher than 60w (5amp) supply though, they typically don't cost much or any more.
Three 5# CO2 tanks, two are Airgas exchanges, one is brand new. I'm using 20# tanks for everything now. +2x old regulators & one five port rail (with old school barb valves).
One old kego temperature controller I bought years ago that didn't work for the (non brewing) application.
Two dirty...
I think most breweries have moved to using extract for peanut butter flavor in the last couple years. https://www.apexflavors.com/Beverage-Industry/alphabetical-ttb/All-TTB-Approved-Flavors-for-Beer-Cider-Hard-Seltzer-Wine-and-Spirits~2103/peanut-butter-extract-flavor-beer-cider-wine-spirits~3455
Your blue tank says what its for, and it's not for beer. Also the seal on CO2 tanks is the nylon washer at the end of the threads, you don't need tape.