Hi y’all I just wanna know if my girlfriend’s betta has fin rot or tears? There’s nothing in the tank that I believe can cut his fins, all that’s in there were plants, the heater and thermometer. There was hornwort in there but since he’s alone with just two ramshorns there’s not enough nutrients in the tank so apparently they were dying but I didn’t know because I don’t see her often. Im guessing them dying and decaying made the ammonia and/or nitrites or nitrates probably increase. She also apparently hadn’t done a water change in about 1 and a half weeks. Since I’ve been here today observing him I’ve seen that he’s been sometimes just staying on the ground which isn’t unusual for him but now it’s like he’s falling to a side once in a while and catches himself. He’s eating like normal but I’m pretty sure he isn’t okay at all. I’m going to be taking him home and since I just got a new 20g long to try to grow plants out I’m gonna put him in there. All that’s there is a sponge filter and a lot of hornwort that’s actually growing good. It also sometimes seems like the bottom half of his body is raising up but he stops it from happening, this is also happening once in a while when he’s resting on the bottom. I don’t know the parameters of her tank as she doesn’t have any testing kits but I have one at home so might take a sample of her water and test it at home when I get home. If there’s any tips or advice to help me help him survive whatever is wrong it’ll be very much appreciated. Thank you.