Hello everyone! This is my wife's Betta. I just got back into the hobby after moving and set up a 5 gallon that's been running for about 5 weeks. Bettas fins started looking a bit torn up a week ago. I have all live plants in the tank that are doing well. Bought some aquarium salt today and put in a tablespoon diluted in water. I don't have experience with tail biting or fin rot so I wanted to ask you guys. He does swim around and over the plants a lot so that could be rubbing against things. The shredded parts of his tail aren't black or red on the edge and nothing looks odd about the rest of his body.