I havnt put any more bettafix at all since cleaning him, but like i said i only did a 50% water change. Should i do a complete water change tomorrow? Also, he is just sinking right after he freaks out trying to get air. that is the big problem that he cant get any air at all! He isnt bloated or floating nothing like that. The only other thing is that he had fin rot and that was starting to get better before this breathing thing happened. I noticed that he had some red lines on his gills but i am not sure if they are just part of his coloring because he is red and blue. I just wanna try to get him better or at least make him feel better. I dont want him to suffocate to death ! that is just a horrible way to die! It hurts to see my little buddy suffering and i cant do anything at all to ease it!