My male halfmoon betta, Shadow has recently recovered from a bout of Spticemia, and he seems otherwise healthy, but it looks like he has popeye. I know popeye is a symptom of septicemia, but he recovered a week ago. Both of his eyes seem excessively bulgy, and they are about the same size. Attached is a picture.
What size is your tank? 1 gallon
What temperature is your tank? About 83 degrees F
Does your tank have a filter? Yes
Does your tank have an air stone or other type of aeration? The filter uses a bubbler
Is your tank heated? Yes; it's sitting on a heat mat
What tank mates does your betta fish live with? None
What type of*food*do you feed your betta fish? Hikari Bio-Gold
How often do you feed your betta fish? 3 pellets twice a day
How often do you perform a water change? Every 3 days
What percentage of the water do you change when you perform a water change? 50
What type of additives do you add to the water when you perform a water change? API stress coat
Have you tested your water? No, but I use filtered water from my refrigerator heated to match his tank temperature.
Symptoms and Treatment
How has your betta fish's appearance changed? Eyes are bulging a little, equally in both
How has your betta fish's behavior changed? Not at all
When did you start noticing the symptoms? When he had Septicemia, then the symptoms subsided, and returned yesterday
Have you started treating your fish? Not yet. He's been through a lot of stress from treatment for persistent fin rot and the septicemia
If so, how? N/A
Does your fish have any history of being ill? Persistent fin rot pretty much since about a month after I got him (finally beaten along with the septicemia), and Septicemia a few weeks ago.
How old is your fish (approximately)? I got him from Petco about mid-November
I should mention that I'm a college student, and I was using school water for the water changes until I brought him home two and a half weeks ago; I think the filtered water is what finally stopped the fin rot (along with treatment of Jungle's Fungus Clear), and I will use my Brita pitcher to filter the water for his changes when I go back in the fall.