I leave my moms together in the tub. More than one mom will nurse litters, making it easier on the mom who gave birth. I wean my babies off once they can run around with eyes wide open.

I know there's lots of ways to raise rats and I'm still learning more and more, mostly from folks right here on BP.net. Stick around and ask tons of questions, because everyone here seems really knowledgable AND more importantly, they're willing to share their information with others.