How to treat fin rot in Bettas

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bubbles
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Joined: Sun Jun 12, 2022 12:39 pm

How to treat fin rot in Bettas

Post by bubbles »

My betta's fins are looking rough, kinda shredded at the edges. Water params are good, 0 ammonia, 0 nitrite, 5 nitrate. Tank is 5 gallons, heated to 78F, sponge filter. Been doing 20% water changes weekly. What's the best way to treat this?
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raylite
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Re: How to treat fin rot in Bettas

Post by raylite »

Fin rot's usually bacterial, sometimes fungal. First, bump water changes to 30% every other day. Add aquarium salt at 1 tsp per gallon, but dissolve it first. If it doesn't improve in a week, consider an antibiotic like erythromycin. Keep the water super clean.
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SoundWise
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Re: How to treat fin rot in Bettas

Post by SoundWise »

raylite wrote: Wed Jul 30, 2025 9:59 pm Fin rot's usually bacterial, sometimes fungal. First, bump water changes to 30% every other day. Add aquarium salt at 1 tsp per gallon, but dissolve it first. If it doesn't improve in a week, consider an antibiotic like erythromycin. Keep the water super clean.
Yep, this is solid advice. Also, check for any sharp decor. Sometimes fin damage starts from physical tears, then gets infected.
Lapad
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Joined: Fri May 31, 2024 7:23 pm

Re: How to treat fin rot in Bettas

Post by Lapad »

I've had success with Indian almond leaves. They release tannins that help with healing. Just drop one in the tank, and it'll tint the water slightly. My betta's fins improved within two weeks. Make sure to keep up with the water changes though.
SkyBound23
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Joined: Thu Oct 10, 2024 2:54 pm

Re: How to treat fin rot in Bettas

Post by SkyBound23 »

Yo, fin rot's a pain but fixable. I'd second the salt thing, but don't go overboard. And yeah, check for rough stuff in the tank. My dude got caught on a fake plant once, made everything worse.
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bubbles
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Re: How to treat fin rot in Bettas

Post by bubbles »

Thanks for the tips, everyone. Gonna try the salt and almond leaves first. I'll update in a week.
rodent1
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Re: How to treat fin rot in Bettas

Post by rodent1 »

If you're using salt, remember to remove it gradually after treatment. Do a series of water changes to dilute it out. Sudden changes can stress the fish more.
angelwras
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Re: How to treat fin rot in Bettas

Post by angelwras »

My betta had fin rot last month, and I used API Fin & Body Cure. Worked like a charm, but you gotta follow the dosage exactly. Also, keep the tank dim to reduce stress.
Bamda
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Re: How to treat fin rot in Bettas

Post by Bamda »

Lapad wrote: Thu Jul 31, 2025 12:52 am I've had success with Indian almond leaves. They release tannins that help with healing. Just drop one in the tank, and it'll tint the water slightly. My betta's fins improved within two weeks. Make sure to keep up with the water changes though.
I've heard good things about almond leaves too. They're natural and safe, plus bettas seem to like the darker water. Just monitor the pH, as tannins can lower it slightly.
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coralCartel
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Re: How to treat fin rot in Bettas

Post by coralCartel »

If you're gonna medicate, make sure to remove any carbon from your filter first. It'll just soak up the meds and make 'em useless.
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