I have a 4 month old silkie pullet who can't seem to shake her illness. She and another one came down with a mild case of coccidosis at the same time. There was no blood in the stool but they were both losing weight, fluffed up, droopy wings, and heads were close to their bodies. I seperated them from the flock and began treatment with sulmet. They perked up quickly and my husband finished the treatment when I left town for the holidays. They were doing great and when he left town to meet me, a friend of his came to watch the critters while we were away. Just to be on the safe side, we decided to keep the two seperated from the flock while we were away. My husband changed their shavings before he left. When we came home one of the pullets was VERY sick again. This time she had lost a lot of weight, there was blood in her stool, she was very weak, fluffed up. I immediately started treatment again and cleaned their pen. I discovered that the friend who had watched them while we were away had spilled a TON of water in the shavings and did NOT clean it. There was a lot of mold under the shavings from the spilled water that the chicks had been living on. (I was VERY angry). With clean shavings and treatment she perked up again. I treated her for the 6 days that is advised on the bottle. She was doing GREAT. No more blood. Running around. Putting weight on. Now, 2 days after treatment ended, she is back to sleeping a lot, tail is slightly droopy, and her head stays down, almost parallel with the ground. She is definately not feeling well and getting sick again. She just can't seem to shake it. I don't know what to do? Should I treat her again for cocci? I have a vita-pro b concentrate with electrolytes? An antibiotic?