The beans are compatible sprout times and are supposed to take 3-5 days to sprout.  Mine always have tiny tails at this point (5 days), only the very best growing ones reach 1/4".  They don't smell, but I have seen white hairlike mold on them before and couldn't smell this.  Should I be sprouting beyond 5 days?  I read about this being a way they get moldy, and I get paranoid.  Then, also paranoid that the tails aren't long enough for the bean to have become safe to eat.
I'm open to using ACV instead of GSE as a rinse agent but don't know how this works enough to do it.  For instance, how much ACV to water to mix, then do I just pour it through my sprouting bag?  I don't want to use GSE because of the additives, right now Beau isn't supposed to be getting preservatives or synthetic additives.