Strange betta illness

AshK

Muffin MIX NAO
Jun 24, 2008
481
0
16
38
California, PA
I come back from a 2 day stay with my mom to find one of my betta's sick. Symptoms:

-bloated (no pineconing, can swim just fine, no floating or sinking)
-lethargic
-pale abundant feces (not stringy)

Appetite is still good. Fasting a day then feeding a pea did nothing. Water params are 0 ammonia, 0 nitrites, 0 nitrates (Tank is planted), temp is 80. I do weekly changes but now I'm changing the water everyday. Should I treat for internal parasites?
 
He's paler. Do not have a test for hardness. The pH of his water is 6.8.
 
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