Possible fungal fin rot


New Member
Advice please! I’ve noticed throughout April that my bettas developing a milky coloured border around all of his fins. It’s evenly spread across all of his fins and they’re starting to look a little tattered in my opinion. I have some kanaplex and was wondering if it’s needed if he does indeed have fin rot


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New Member
Addictedtobettas said:
Kanaplex would be major overkill for a simple case of fin rot. If you can fill this out: Fish Emergency Template | 376562

Fin rot is helped first and foremost by frequent water changes, I prefer every other day at about 25% each time - depending on the severity of the situation more or less is needed.

What is the water volume of the tank?
How long has the tank been running?
Since start of January 2020
Does it have a filter?
Does it have a heater?
What is the water temperature?
28 C
What is the entire stocking of this tank? (Please list all fish and inverts.)
One betta

How often do you change the water?
twice a week
How much of the water do you change?
What do you use to treat your water?
I have to use rainwater so I don’t use any treatments
Do you vacuum the substrate or just the water?
Yes I vacuum the substrate

*Parameters - Very Important
Did you cycle your tank before adding fish?
What do you use to test the water?
API freshwater master kit
What are your parameters? We need to know the exact numbers, not just “fine” or “safe”.

Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: 20ppm
pH: 7.6

How often do you feed your fish?
Twice daily, morning and night
How much do you feed your fish?
3 pellets per meal
What brand of food do you feed your fish?
Hikari betta bio gold
Do you feed frozen or freeze-dried foods?
Freeze dried blood worms as a treat

Illness & Symptoms
How long have you had this fish?
Since March 2020
How long ago did you first notice these symptoms?
Sometime April
In a few words, can you explain the symptoms?
Cloudy edges around all fins, beginning to look tattered
Have you started any treatment for the illness?
More frequent water changes
Was your fish physically ill or injured upon purchase?
Yes, was recovering from fin rot
How has its behavior and appearance changed, if at all?
Behaviour remains the same, fins went from clear edges to cloudy

Explain your emergency situation in detail. (Please give a clear explanation of what is going on, include details from the beginning of the illness leading up to now)
When I purchased my fish I wasn’t aware that at some point he had fin rot. Since then I’ve been paranoid that he’s got it again, especially since the cloudy edges around his fins was a clear colour about 2 weeks ago

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