I woke up this morning and observed my betta moving around slightly more which made me very happy. Then, I noticed that one of his fins is torn. I'm thinking maybe the filter I have has too high of a current and that caused it. I'm considering changing the filter, but is there anything else I need to do?
As long as its not black and rotten looking at the edges, which from the sounds of it, it isn't then your good. Just keep an eye on it. If it does start getting "rotted" looking then you've got a case of finrot, but that's easily treatable. If you really feel the need to speed it up, add Stress Coat dosed to repair fins and replace slime coat (directions on the back of the bottle). It should "zip" itself up in under a week then.
No, it's not black or anything, but I will definitely keep an eye on it. I've only had the little guy for 3 days and he's finally starting to move around the tank a bit more today, so I'm hoping he's finally adjusting!
D'ah bugger! I noticed mine might have torn his fin today also, so I bought the aquarium salt. Is there any point in using it? I dunno how the hell he did it. He has been acting a little odd lately too.