I've had my betta for about 2 months now, and ever since a few days after I got him his tail just keeps ripping. It will rip, heal, and then be shredded the next time I look at him. I don't think it's fin rot because it keeps growing back but then will tear again and there is no discoloration. There are only silk plants in his tank, the filter is baffled, and the intake is covered with pantyhose. They don't look like bites but more like tears, and sometimes they look shredded. I don't know what could be damaging it.
He's in a 10 gallon tank to himself, heated to 80 degrees and gets daily 20% water changes. I add stress coat and salt every now and then to prevent infection. He's extremely active and eats very well. I'm starting to think he could be blowing his tail from too much swimming--- he's a super delta tail and has a very big and delicate tail.
Has anyone else had this problem? Can he have a healthy life with a constantly ripped up tail?