I came home after 5 days away to find a very gaunt, pale
betta. I entrusted my sister with feeding him, but she "forgot" since, "He's in your room, and I never go in there." Everyone, make sure you emphatically go over fish care with whomever you ask to babysit! (Next time I won't ask my sister.)
Anyway, I immediately did a 25%
water change, which made Frisky perk up some, and decided not to overfeed, but to just put him back on his regular diet (4 pellets in the morning, and 4 at night) and hope he fills out and colors up. After 5 days of this regular plan, he's gotten much better, but is still skinny and a little pale. He seems to forgive me, though!
He also had a badly torn fin. I've just been doing the water change twice a week instead of once a week and adding a drop of garlic guard to the water every night when he's fed. The temp. is a steady 79F, and the parameters are normal. I think he's healed somewhat, about a centimeter, but should I just continue with this plan or do something more?