I went to day to get the supplies I need to get my brooder set up for chicks that hopefully will be here in March. I bought chick starter/grower to feed the babies. Is this the right stuff? It's not medicated, and I'm starting to think I should go back and get the medicated. I did find some small bags of medicated feed, but it was way more expensive, and I'd have had to buy a lot more bags. I picked up 2 20 lb bags to start with, have ordered 25 chicks. I also bought some packets of probiotics and electrolytes. Will these be worth using? I know they get mixed in the water, but is there a time frame to do this with the best benefit?