@luisrosa411 you could either put some of the treated water on some of the food, making a mash that is kept fresh. You also could give them some orally either by dipping beaks into the water or direct dosing. Here is how to do that scroll down to number 7:
https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/
The third method would be to tube feed them a couple of times daily. A 35 ml syringe connected to a 12-15 inch length of aquarium air tubing (found in Walmart pet aisle or pet store)or oxygen tubing can be used for tube feeding fluids and very thin food. You also may get feeding tubes and syringes online. You will find a ton of info about that by Googling tube feeding a chicken, and here is one video: