pH 7.2
Nitrates 25ppm
Hardness 11
Nitrite 0
Ammonia 0
KH/Buffer 120ppm
Water Temperature 76f
hello i had noticed a small spot on one of my cardinal tetras it was a small spot on its lips a few days ago. i originally thought maybe it hurt itself. now it has grown significantly. i may be wrong but now im thinking some sort of parasite. im fairly new to fishkeeping so im not 100% how to help it. any advice is greatly appreciated and thank you in advance.my stocking currently is 10 cardinal tetra and multiple species of Corydoras that add up to about 17 corydora, they are all in a 60 gal fully planted tank with a fluval 307 and large sponge filter