A little background- We have three nine-week old chicks that live full time in a chicken tractor. The coop is upstairs and the run is downstairs. We move the tractor so the girls have new grass every day. They are always on grass. We close the ramp every night after they have gone upstairs to roost. Food Questions- I still have their original chick feeder and keep it upstairs in the coop. I have the chick feed in it and they do eat from the feeder but I also offer them treats from the garden. Since I have them on grass, do I still need to offer grit? I have the chick-sized grit and thought I could put a tiny bowl of it upstairs in the coop for them. Water Question- I keep the water in the run. Since they are locked in their coop at night, they don't have access to the water. Is this okay?