Hi! Right now my 5 week olds are eating Manna Pro Medicated Chick Starter. I already picked up a bag of Poulin Grain Grower Feed. My problem is that the bag of Manna Pro says to feed it for the first 8 weeks. The bag of Poulin Grain says to start feeding at 6 weeks. I have enough Manna Pro to feed them for another week or so. I was thinking of mixing the grower feed with the Manna Pro to make it last till the 8th week. I really don't want to go buy another bag of the Manna Pro for $15 for a 5lb bag. If someone can please tell me if mixing the 2 together would be fine and not harm my girls or mess up the effects of the medicated feed for cocci that would be very much appreciated. Thanks