Hopefully this is an easy question. I used my stir plate for the first time last night. I'm excited to finally be able to pitch the correct population. Made a 1.2L starter in a 2L flask, put it on the stir plate and got a dimple going about half way deep. Then this morning I check on it and there's a layer ~3/8" of krausen on top and no dimple. It won't pull a vortex even at top speed. Is this OK? It is definitely stirring around in there but I'm just wondering if it is normal.
Thanks!
Thanks!