I see my Betta fish glass surfing a lot but I'm not sure if he's stress or if it's just normal. Nitrites and nitrates are at 0; pH is in-between 6.5-7; carbonate hardness is 40; and general hardness is in-between 0-30, which I know is kinda low, but everything else seems fine. Tank is a 5 gallon set to 79 F with some plastic plants, a decorative log, and a little cave, and I feel like I have the water current under control for the most part. He has mild fin rot but I think it's getting better, and he's also constipated but I fed him a pea yesterday to help with that. I can't figure out what is stressing him out so much, so is this just normal behavior for a Betta?