Welcome to BYC. Did they come from a hatchery, feed store, or where? I think I would go ahead and start some Corid in the water. Dosage is 2 tsp of the liquid or 1.5 tsp of the powder per gallon of water for 5-7 days. Also, give 1/4 tsp of the undiluted Corid orally daily in addition. Sorry for...