How much oxygen do you pump into your wort?
#1
Posted 16 December 2009 - 09:13 AM
#2
Posted 16 December 2009 - 09:48 AM
#3
Posted 16 December 2009 - 09:54 AM
#4
Posted 16 December 2009 - 10:02 AM
#5
Posted 16 December 2009 - 11:04 AM
I have an old O2 reg. from a home medical place. I have it set to the lowest setting.I have the stone in a bath of Iodaphore or starsan and on just a few. min. prior to end of Boil. at Flame out I start the cooling process and about half way through the transferI put the stone down in the wort and turn on. once transfer is complete you should have a huge head of Foam. this whole process only takes about a min. or two.that should be enough O2 to make even Rip van yeasty very happy. it's like yeast nip.also. I had a brew Friend tell me to use a drop or less of olive oil just before yeast pitch. not quite sure what it does for the process but I have done both ways the olive oil does speed up the process.any one else do this. Sorry i digress.Cheers.So I take it none of you guys have a way to measure LPM?
#6
Posted 16 December 2009 - 11:28 AM
#7
Posted 16 December 2009 - 01:02 PM
#8
Posted 16 December 2009 - 01:16 PM
well - since my regulator controls flow in LPM I'll try to see what this point is and I'll post back so that people can have some idea what a good LPM would be. JK recommended 3.5LPM to me at some point but I don't think my regulator has 1/2 LMP increments after 2 or 3 LPM.I also go for about 30-60 seconds on low. I read somewhere that you don't want the wort bubbling like crazy... just some light waves on the top of the wort. My airstone is connected to a plastic hose, not a rigid cane so I just try to get the stone down to the bottom of the primary and go. I'll usually go a little longer (60 secs?) for yeast that is in its first run (yeast from a starter) and shorter (30 secs?) for a slurry that has been harvested. Cheers.
#9
Posted 16 December 2009 - 07:18 PM
#10
Posted 16 December 2009 - 07:45 PM
#11
Posted 17 December 2009 - 04:22 AM
so I'm feeling pretty gangster with my flow meter regulator. you guys should check it out - it's on ebay for ~$22 shipped and it's made to fit industrial (welding) style tanks. the best of both worlds!I don't have a flow meter, I set my regulator at the flow rate where I first see movement on the surface, then I oxygenate in two 60second bursts for 11 gallons.
#12
Posted 17 December 2009 - 04:53 AM
#13
Posted 17 December 2009 - 09:42 AM
I got that number from Wyeast. They did some experimentation with oxygenating and they found that 3 or 3.5 (can't remember which) LPM for 60 senconds in 5 gallons would give O2 saturation in the wort..and I'm pretty sure they were using a stopwatch to time it, not a game show jingle.well - since my regulator controls flow in LPM I'll try to see what this point is and I'll post back so that people can have some idea what a good LPM would be. JK recommended 3.5LPM to me at some point but I don't think my regulator has 1/2 LMP increments after 2 or 3 LPM.
Edited by JKoravos, 17 December 2009 - 09:43 AM.
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