Betta fish - circular growth on caudal fin

[Alex B]

First time poster here (and an existing customer).

 

Please help me figure out what, if anything, I can do to help my Betta.

 

Context:

Tank first set up in March of this year.

10 gallon tank; heavily planted (Anubias, Java Moss, Red Dwarf Aquarium Lily, Duckweed); not overstocked [four Peppered Corys, one Oto (another one died some two months ago) mystery snail, ramshorn snails (small population, under control)]  

Water Parameters:

Ammonia: o ppm

Nitrites: 0 ppm

Nitrates: around 10 ppm

PH: 6.4 (has never gotten higher than this)

Hardness: Hard (150-300 ppm, thanks to Wonder Shell)

KH: 0 (has never been higher)

Water Temperature: 78

 

Thank you in advance!

Edited October 27, 2023 by Alex B

[TheSwissAquarist]

One of my bettas also has one of these. Salt (1tbsp/5 gallons) worked really well. 

[Alex B]

Thanks for your reply! Didn't the salt hurt your plants?

[Colu]

On 10/27/2023 at 4:06 PM, Alex B said:

Thanks for your reply! Didn't the salt hurt your plants?

Have seen these lumps before they respond well to a small amount of aquarium salt 1 table spoon for 6 gallons salt as that level shouldn't harm your plants and add some Indian almond leaves as they have antibacterial and antifungal properties @Alex B

[Alex B]

Will do. Thank you!

[TheSwissAquarist]

On 10/27/2023 at 5:06 PM, Alex B said:

Thanks for your reply! Didn't the salt hurt your plants?

I used a separate QT tank - not that I’m a big plant guy. 🙃

[Alex B]

Yeah, I know that's how I should do it. Thing is, I've never used a quarantine tank before, and I don't have the extra equipment to set one up.
I did add a third catappa leaf to the tank, hopefully that'll help the fish.

Thanks again, I appreciate the advice!