Are those deep scallops turning blackish around the edges? If not, it is probably just bites which can be treated, as Enkil suggests, with warm (82*), conditioned water, changed often.He has a Japanese temple and a plant
But now I think it might be fin rot
What are you using for the ammonia? The preferred method of controlling ammonia is water changes with conditioned water.But I am medicating the tank for amonia and high ph
What are you using for your pH? How high is it? What is your sourcewater pH? It is generally recommended that a keeper not mess with pH if it is within an acceptable range, which, for a Betta is quite wide.