Starter won't grow
I have been feeding my starter and it just won't grow. It gets all bubbly, has an interesting smell (a bit like nail polish remover), and it looks healthy. It just won't grow. I tried using rye flour and still nothing more than bubbles. I have been feeding with a 1:1:1 ration by weight. I know it is not dead because I did have a successful rise a couple of days ago, but it took nearly 24 hrs for it to double. Then I fed it again and got nothing.
What should I do??