I've gotten to the point with my betta fish that I believe it's in his best interest to euthanize him. When I got him almost a year ago he had fin rot, gill flukes, and velvet. I medicated him and cured him of those issues, but he's since developed really bad dropsy. I was giving him salt baths every day, but he's at the point where his entire belly is pineconed and swollen, he can't swim on his own anymore and I have to keep him propped up in a net at the top of the tank so there's not a lot of pressure on his swim bladder. I'm going to have my boyfriend euthanize him with clove oil whenever he gets home because I don't have the heart to do it myself. My only question is, how much clove oil do you use? How do you do it? And how do you know for sure that the fish has passed?