When can you start switching to pellets instead of crumble? Also when do you switch to grower? My 61/2 week old chicks found my ducks food (layer pellets) and went to town. So now I know to need to switch my ducks over to grower since the chicks are going to be helping themselves. They have free choice oyster anyway since they are all laying. I would like to only buy one bag of food and crumble and my ducks don't mix very well. Can everyone just be on grower pellets till my chicks are laying age and I will switch back to layer blend?