I ordered 24 chicks 10 different breeds. All came in alive and active. Have heat plate for them. Gave probiotic and electrolytes in water and gave medicated crumble. Also had gro gel first 24hrs. Vaccinated for marek's. All seemed fine eating and drinking. Then first died next morning followed by one mid day. Gave them cooked mashed egg yolk. They ate up. Another following morning then another. Made it through one night with no death in morning thought it was over (4 dead) then after noon 2 died. No paste butt active eating drinking.Decided to loose the heat plate went to heat lamp to keep better eye on them. Noticed bubble watery poop with a little white to it. Saw chick die= lay down start breathing fast a few chirps then dead. I am so upset not sure how to help. Put ACV in water tonight. Can anyone tell me what they think it is and how to help it stop. Total now at 6 dead chicks.