White spot on a betta

[Savethemall]

Hi yesterday ive noticed a white spot appeared on a beta ive rescued 2 weeks ago . It dosent seems buldging, and its kinda like a V shaped white scratch.
The thing is theres nothing in the tank to scratch him so its kinda weired. its really hard to see but here are some pics, ant ideas what is it?
thank you

Btw the bucket is a 20l with no filter cuz he was almost sucked in when i tried to put one and an air stone, water temp is 27 and of course that this is a temp quarantine

 

[kno4te]

I’m not seeing the area in question too well. Can U take another pic of it or circle it on the pics above?

 

[Savethemall]

 

[kno4te]

Looks like a deep scrape. Not much more. Would watch for now and keep the water clean.

 

[Savethemall]

Hi, the spot is gone but 3 days ago he started to show signs of finrot.
its progressing so i want to try and treat with methylene blue. The thing is there are a few diffrent dosage recomandations online. Do you know whats the reccomended dosage for a bath? how much ppm should it be? thank you

 

[kno4te]

Hi, the spot is gone but 3 days ago he started to show signs of finrot.
its progressing so i want to try and treat with methylene blue. The thing is there are a few diffrent dosage recomandations online. Do you know whats the reccomended dosage for a bath? how much ppm should it be? thank you

1 tsp per 5g.

 

[Savethemall]

1 tsp of what? MB brands come in all kind of concetrations , thats why im asking for ppm..

 

[kno4te]

1 tsp of what? MB brands come in all kind of concetrations , thats why im asking for ppm..

Most of the dosing methylene blue like kordon is tsp per 5g. I would suggest following the dosing directions.

 

[Savethemall]

ive checked a few brands and each has a diffrent final concentration so someone is wrong..

 

[kno4te]

ive checked a few brands and each has a diffrent final concentration so someone is wrong..

Think it depends on the concentration in the bottle. Still should follow the company dosing guides.