What is your water source? If it's unfiltered well water high in iron, this could be the problem.
Even if you use tap water, local commercial activities could be contaminating the water.
The first thing I would do is use bottled water. Then I would put the chicks on an antibiotic.
Even if you use tap water, local commercial activities could be contaminating the water.
The first thing I would do is use bottled water. Then I would put the chicks on an antibiotic.