How much oxygen is enough on a high gravity wort?

[julioohara]

Hi,
I am brewing a batch of a somewhat high gravity wort (1.056) that I aerated by pouring back and forward 6 times, however it's been 2 weeks and the apparent attenuation is 25%

My questions are:
1. How much oxygen is enough for higher gravity worts (in ppm)
2. How do I achieve these levels of oxygen/what techniques should I use to get a successful fermentation.

I would appreciate the help

 

[medusa1066]

1. I don't know this answer. Are you going to buy an oxygen sensor?
2. There are many methods that are successful (pouring as you did, shaking, whipping during whirlpool). I prefer splashing during my transfer into my vessel.

My questiion to you is: What is your pitching method for the yeast? How much, starter, etc...

 

[twistr25]

In addition to the above, what are your temperatures and do you have a recent hydrometer reading?