Stir Plate Question

[Wild Duk]

I made a 1 ltr. starter last night. When I went to bed around 11pm, it was going nice with a small whirlpool in the middle of the flask. Now in the morning, the stir bar is spining but no whirlpool. Is this normal, does it mean its done or what. Not very experienced with stir plates. There is a nice layer of bubbly foam on the top though.

 

[cdanprice]

This is normal. The foam is a good sign.

 

[Calico Jack]

This is normal. The foam is a good sign.

Foam sounds quite healthy.

 

[brewgrl]

as long as the stir plate is keeping the yeast from settling out, it`s doing its job.

 

[Brew-boy]

Look at the yeast you should be able to see it in suspension.

 

[steelerguy]

The foam on top prevents air from being drawn down into the vortex like it was before you got krausen. It is fine, don't even really need much of a vortex, just want to keep that yeast off the bottom.