Got 78 chicks 2/6/13 over 50% dead getting replacements from hatchery on shipped dead ones. But the surviving chicks are still dying 2 a day. By now they should be okay. All look fine running around then in morning 2 more gone. Now down to 25. New brooder, 2 heat lamps, (right amount of heat that they are not under lamps nor around sides of brooder), straw bedding, 2 waterers,(cleaned before use with bleach & rinsed), 2 feeders,(made from new buckets) feeding them organic soy free chick food - gave them chick saver in one water and apple cider vinegar in other. They are eating & drinking. Don't know what to do. I have had thousands of chickens in the past & never came across this! Any and all help will be appreciated greatly!!!