Thank you so much, that's helps a lot! I have another question that may depend on which pump I use. When the piggy back is done infusing and the primary starts to infuse again, will the primary be infusing at the rate my piggy back was, or will it automatically infuse at the rate it was infusing before I started the secondary. Or will I have to be by the pump when the secondary ends to start a new rate for the primary bag? Thanks!!!!