SourdoLady, I've just fed for Day 3 of my orange juice whole wheat flour starter; when I repeat Day 4 after tomorrow, do I have to keep discarding all but 1/4 of a cup? It's got all little bubbles right now over the surface and smells very nice; it's now living on top of the fridge in the kitchen.
I'd done the Day 4 refreshment with the spring water and unbleached white flour, transferred it to a Ziploc container and put it on top of the fridge. I heard a pop from the kitchen, went in, and sure enough, the top had popped up! It seems very active and bubbly now.