Quote Originally Posted by LeviBP View Post
The general rule is 10-15% by body weight. Two hoppers is spot on, I would feed this around every 5 days until she is between 200g and 290g then I would start her on rat pups, and after 300g you can go ahead and up her to a weaned rat.

Good luck! Hope she gets nice and plump
Weaned rats are typically 35-45 grams and way too big for a 300g ball. I dont start mine on weans till thier 6-700g. This is when they start to pack on the weight and growth spurts happen.