Hello. I just found this forum. We've been getting advice from the pet store where we found him and then from a more fish based pet store where we started buying plants. This is our first betta.
Nin is losing his color. It started on his fins, and then his body started losing it's color as well. His fins have always been kind of ragged and stringy looking, but after seeing pictures I'm wondering if this is fin rot. The people we've been asking say we have nothing to worry about, but it appears to be getting worse. He swims, eats, makes bubble nests about the same as he always has. The white spots on his body don't look 'cottony' to me and there are no little white spots (ick?) that I can see. It just looks like the color is gone.
Housing
What size is your tank? 5 gallon, filled half way
What temperature is your tank? 78
Does your tank have a filter? yes, low flow. only run a couple hours a day
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 currently. a snail for a couple months
Food
What type of food do you feed your betta fish? hikari betta bio-gold
How often do you feed your betta fish? 2 times a day (5 pellets)
Maintenance
How often do you perform a water change? 1 week
What percentage of the water do you change when you perform a water change? 1/2. We had been doing 100% every other month, but was told that was too often
What type of additives do you add to the water when you perform a water change? instant DeChlor
Water Parameters:
Have you tested your water? If so, what are the following parameters?
Ammonia:0 to .5
Nitrite: 0
Nitrate: between 0-20
pH: 8.2
Hardness: 100 (but sometimes a little higher)
Alkalinity: 8.2
Symptoms and Treatment
How has your betta fish's appearance changed? loss of color on fins, then body. Fins are more ratty.
How has your betta fish's behavior changed? none
When did you start noticing the symptoms? 3 weeks
Have you started treating your fish? If so, how? API Liquid Fungus for a week, then API Bettafix for a week
Does your fish have any history of being ill? no
How old is your fish (approximately)? he's been here for 5 months
Here are some pictures:
The spot on his side and his fins

The other side:

Ratty fins:

Thanks for any help!