My betta fish heithcliff bit his tail last week out of excitement because he was getting brine shrimp. He had a few holes to start with and I did a 50%waterchange so it wouldn’t get infected but it got infected and the next day he looked all shredded and o started doing 50% water changes every other day and adding API stresscoat +. It looked like he was getting better for a few days the fin stopped shedding away and he was ok but I just woke up and now more of his fin is gone and some of his other top fin is gone too . I’m so sad because he is so beautiful and big and happy and I just want him to be healthy too . Should I use aquarium salt to help his fin rot?? I’ve used it in the past where I had a fish in a 1 gal for like 7 days with the salt water I did almost 100% daily water changes tho I think and there was nothing wrong with them after. I’m just worried I don’t want to stress him out and kill him. I’ve heard of salt baths where I just plop him in the salt water for like ten minutes but that sounds like it would be even more stressful for him. I don’t know I just want my fish to be happy and healthy any advice?