In addition to what lazy gardener says above, you can use any kind of feed, although in my experience the crumbles (granules?) do a bit better. You really do not need anything but the water and feed and I do mine in a two quart jar on the counter for six chix. I replenish every three days or so. They love it and it is a superfood for them...gets chicks internal systems off to a perfect start.
As above, the chick starter would work for your entire flock until chicks are at point of lay (about 18 -20 weeks). Let us know how it goes.
I have a sick hen I believe, she is very young but it's only my guess how old! It's ok to feed her starts grow right? I have some soaked and wanted to see if it changed her stool while she's isolated. I got a HUGE bag from the feed store also so I'm wondering if I can feed it out to everyone if the chicks don't eat it all.