Popeye is actually a symptom rather than a disease and generally means that there is something wrong with your water quality more than anything else. The most important thing is to give the little one very clean and clear water conditions and as pure a water situation as possible for the next while to prevent the eye loss. I realize this may be inconvenient but is there any way you would consider putting him in a seperate container alone if he is not and take him and put him in even a hospital tank with maybe only about a 2 gallon capacity and put him where he will be warm and away from drafts so he will not need a heater and buy him some bottled Spring water for the next week or so to get his eye healed up and do not use tap water in the container at all. No substate or any other decorations or anything in the tank but just him to keep the possibility of infection down. You will need to change out one gallon of the Spring water a day to keep the ammonia level down since it is unfiltered and all but it will keep him from losing the eye. If you want a double whammy against the eye problem you can add a whole packet of Maracyn daily. I know that this is more than the package says to use in that much water but remember you are doing water changes daily and it is watering it down and that makes a difference.

Within a 5 day period you should stop the Maracyn and just keep him in the Spring water tank for a week longer or until his eye is completely back to normal. He should be fine.

If you do not have any other container, go to the dollar store and get a plain unused bucket in white and let him stay in it for a week. He will be fine as long as it is not something that has ever had detergents in it before and it will need a piece of craft canvas or something over it to keep him from jumping out that can be purchased from any Walmart or craft store in the craft area. Just ask for plastic mesh canvas in a 12 inch by 18 inch piece. It will give him plenty of light and enough air and yet keep him safe inside the container whatever you use. He will not need a light as his eye will need to rest.

Rose