I have just finished my DIY stir plate from http://www.homebrewtalk.com/f51/my-s...y-build-86252/
and I had a question about what kind of vortex I need to get the most out of my starters.
First off I have a 5.7v power adapter. While that spins the bar fast while alone on my stir plate, when its it my 2L flask it only makes about a 1" dimple in the water. The spin seems to be fairly balanced and isn't being thrown.
My question is do I need a big vortex to get great starters? And because I simply want one anyway, do you think its my power supply or perhaps my magnets.
I have worked with the spacing and I beleive that is about as good as it will get. Thanks in adavance