I just installed my chicks waterers today and they won't drink from it. They are ages 7-8 wks old. I tried to round up most of them and bring them into the coop and put their beaks to it but no go. It was 97 today so I put out the normal waterer so they wouldn't go thirsty. Tomorrow should I just not give them the 2nd water option and just let them learn on the nipple? Any other advice as to how to get them to drink from it?