She's been very lethargic, just sits at the bottom of the tank. Large white spot on each side of her body. Right now I have her in a jar with some aquarium salt and a sponge filter.
Her tankmates aren't showing any signs of illness. I have 5 kuhli loaches, some red cherry shrimp, many snails. I heard scaleless shrimp aren't good with salt, is this true? Can I just add salt to my whole tank? I'm worried if I return her to the tank untreated she could be reinfected. Also, what temperature is best for treatment?
Ph~8, Ammonia and nitrites 0, nitrates ~10-20 ppm
I'm located in Canada if that makes a difference with obtaining treatments.
Edit: while in her quarantine jar, she is now occasionally swimming to the surface to gulp air, then swims back to the bottom and sits there. Never seen this behaviour before. The aquarium has an airstone and she was also laying on the substrate, but never saw her swim to the surface to gulp air. Quarantine jar has an airstone and sponge filter running.