My chicks are 4 weeks old. I have noted in several different forums on here, that you should add apple cider vinegar to their water for several different health reasons. When I acquired my chicks ( the day they hatched) from Meyer I also purchased some Vitamins marked Vita pack Vitamin and Electrolyte supplement (I think its called). I have been putting this in their water everyday- so my question is.... How long do I continue this? And should I switch over to ACV anytime soon? The chicks are all very healthy and doing well at this point. Thanks in advance for the input.