I just got my fish, Sgt. Pepper on Saturday from Petsmart. He's a purple/blueish and red halfmoon. After I got him I noticed that sometimes he had white filmy stuff coming off of his fins, and now his fins seem to be rotting away. His fins have turned a sort of shiny gray, and it looks like it is starting to get to his body as now a small part of it by his fins turned gray as well. I noticed his fins starting to turn a shiny gray around late Monday night, so I don't think it's the mystery disease as I heard that kills the fish pretty quickly. Also the tips of his fins look black. I have been cleaning out his water everyday and adding aquarium salt hoping that will help, but it doesn't seem to be helping that much. Also, he looks like he has a gray colored belly and gray under his face, but I don't know if he is naturally that color.
Housing
What size is your tank? 3 gallon kritter keeper
What temperature is your tank? 75 degress
Does your tank have a filter? no
Does your tank have an air stone or other type of aeration? no
Is your tank heated? yes
What tank mates does your betta fish live with? none
Food
What type of food do you feed your betta fish? pellets and bloodworms
How often do you feed your betta fish? once a day, 4 pellets or a bloodworm
Maintenance
How often do you perform a water change? twice a week unless sick
What percentage of the water do you change when you perform a water change? 1 50% and 1 100%
What type of additives do you add to the water when you perform a water change? aquarium salt only when sick
Water Parameters:
Have you tested your water? If so, what are the following parameters? no
Ammonia: n/a
Nitrite: n/a
Nitrate: n/a
pH: n/a
Hardness: n/a
Alkalinity: n/a
Symptoms and Treatment
How has your betta fish's appearance changed? fin colored changed
How has your betta fish's behavior changed? no real behavior change, he still eats and moves around, he does stay in his yellow submarine more now though, but that's probably because he has gotten used to his surroundings and has calmed down
When did you start noticing the symptoms? white filmy stuff coming off the tail when I got him on Saturday, fins turning a shiny gray late Monday night
Have you started treating your fish? If so, how? yes, daily water changes with aquarium salt
Does your fish have any history of being ill? no, I just got him
How old is your fish (approximately)? I just got him on Saturday
Here are pictures of when I first got him and how he looked before all of this, and 3 pictures of how he looks now, not really good quality but it's the best I can do.