Yeast Starter not fermenting

[scubasteve21]

I have done yeast starters for my last couple of batches. I have been using liquid yeast. Last night I did another one but the airlock is not moving or has any type of activity(i.e. bubbles), but there is a lot of foam at the top of the wort. Any reason for this happening? Any ideas on how to fix without redoing the yeast starter? Thanks for the help.

 

[TheJadedDog]

Personally I never even get bubbles in my yeast starters. Chances are if you have foam you have fermentation and the CO2 just isn't getting all the way to the airlock.

 

[david_42]

Yeast starters are for growing yeast. If they switch over to fermentation, re-aerate.