This is probably a completely n00b question, but I will pose it anyway... Will too small of a stir-bar (and the vortex it produces) negatively affect my starter efficiency? I recently built a stir plate using a computer fan and magnet out of an old HDD (as shown on Youtube). My 2l. Erlenmeyer flask and stir-bar (~1") arrived yesterday. Of course I tested my homemade stir plate right away and was stoked to see it works like a charm. The only thing that I am a bit worried about, is that I didn't get a full vortex like I have seen in all the demonstration videos. The vortex remained only 1-2" deep. Should I be worried that the liquid won't be stirred enough, or is it okay the way it is?