I am using my home built stirplate (standard build 12v computer fan with 2 hard drive magnets) with an Erlenmeyer flask for the first time. I tested the plate with a glass jar and a pint or so of water and always saw a pronounced vortex.
I just cleaned, sanitized and dumped in a 1qt starter and started running. I have noticed that I am not getting
the vortex that I had with the 1pt test. In fact, the starer has more of "dimple" than a vortex. The yeast appear to be in
I bought the flask yesterday and in my excitement to get a starter going, I didn't test with water so I don't know what to expect.
My guess is that the 1qt starter is heavier than the 1pt test with water and the resistance of the larger volume is slowing the rotation speed. I should say that the fan speed is not restricted, it's going as fast as it can, given the load.
Here are two pictures:https://picasaweb.google.com/lh/photo/JSN45Xv4z3KalO1aCTJ-8Px09yX6VdNA3PV_tVK72DQ?feat=directlinkhttps://picasaweb.google.com/lh/photo/a7ERhj6i7AWuibqyoDV0f_x09yX6VdNA3PV_tVK72DQ?feat=directlink
Is there anything here to be concerned about ? Do I need a more powerful fan?