I know if you google “ when to give chicks grit “ you get the above answers... But my brooder is full of sand that the chicks eat from the very first days... if our chicks were with their mommy they would be eating bugs and dirt ,grass and whatever they find from day one ... that’s why I allow mine to partake from day one ,
it’s how they would naturally explore if I hadn’t got them from a hatchery
There are different opinions on this , and we
@Melky are on opposite sides, my experiences have been great this way