Hi! I’m a new betta fish owner and my betta is acting off. I got him a little over a week ago, and since I put him in the tank, he’s been gliding along the glass and staying at the top of the water. I checked and there is 0 ammonia, 0 nitrites, 0 nitrates, and the ph is about 7.4. I also have a filter, air stone, and a heater and the water is 78 degrees. After a few days of him not swimming, he began to float on his side and not eat, so I did a large water change with conditioned water. He got better and began to float upright again and even swim down a few times, but now he looks like he’s getting worse. His face scales and eyes look irritated and he’s starting to float on his side again. He also is gasping at the top of the water. I thought it was SBD but not I’m not sure. I’ll attach a few photos to show what I mean. Please help!!