Hi all,
I would like to see other's setup for yeast propagating. I get mixed results with my setup wich is a modified half barrel keg with a aeration stone and some valves. I propagate for 10BBL of wort. My SOP is to start a 5L starter with 4 smack packs on a stirplate for 24 to 48hrs then transfer the whole into 45L of wort in my modified keg. I plug pure oxygen around 1L/minute, this is where I think I could do better, I am wasting a lot of oxygen since most of it just comes out of solution. What would be the ideal oxygenation rate for maximum growth? Should I use a pump to recirculate yeast? What kind of pump? I also have trouble taking a sample since my sample port is from the bottom and yeast tend to clump there no matter the yeast strain. I have no way to see if yeast is stuck to the bottom of the keg. I had to under pitch a couple times because the count was not high enough.
Thanks
I would like to see other's setup for yeast propagating. I get mixed results with my setup wich is a modified half barrel keg with a aeration stone and some valves. I propagate for 10BBL of wort. My SOP is to start a 5L starter with 4 smack packs on a stirplate for 24 to 48hrs then transfer the whole into 45L of wort in my modified keg. I plug pure oxygen around 1L/minute, this is where I think I could do better, I am wasting a lot of oxygen since most of it just comes out of solution. What would be the ideal oxygenation rate for maximum growth? Should I use a pump to recirculate yeast? What kind of pump? I also have trouble taking a sample since my sample port is from the bottom and yeast tend to clump there no matter the yeast strain. I have no way to see if yeast is stuck to the bottom of the keg. I had to under pitch a couple times because the count was not high enough.
Thanks
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