Force Pressurizing using corny Kegs & Yeast Replication

General Homebrew Discussion
1

Just curious for anyone who has done this-

I am planning on force pressurizing corny kegs with CO2 for carbonation. I have 6 corny kegs, and I am trying to figure out how much CO2 I will need. I can get a few 5lb tanks, or a 20 lb tank to rent for a year and then just fill up. Anyone have any expertise in this area?

Also, I have ordered an oxygen stone to attach to the end of my wort chiller- I am planning on stimulating the yeast growth by adding oxygen to the wort as its cooled on the way to the fermentor (6-8 psi while fermenter is filling and maybe another shot about 12-18 hours later). I understand that this can help not onoly in the fermentation process, but also preventing bacteria. My question is this- can you over stimulate the yeast by adding too much oxygen or by simply creating too much of a rapid yeast growth?

Anything helps!

2

Go with the largest tank you can manage. I have two 10’s and go through about 3 fills total a year. The price difference for fills is negligible and pays for it self pretty quick. Having two tanks is nice as my kegerator and brew gear are in two different parts of the apartment with stair between. I may upgrade one to a 20.

3

A pound of CO2 will carb and dispense 3-4 kegs depending on pressure and temperature. Plan on 2/lb to allow for purging, etc.

When using pure O2 to oxygenate, you can over-oxygenate. Without a DO meter, it’s impossible to calibrate exactly how much oxygen to add, but it seems like most people recommend about a liter.