Well I am very new to this forum and very new to the aquarium hobby. I recently saved an Oscar from, sad to say, a family member. He is pretty big. They had him for about a year now. He was living in a 10 gallon tank with horrible conditions. There was no substrate at the bottom and the water was extremely filthy. When I mean extremely filthy I am not over exaggerating. The water was so dirty, I could barely see him in there. Well I took the hanging filter off, and it was so gross, I had to rinse it out before I put it in a bag. When I returned to the tank (less than 4 minute later) he was lying at the bottom, and it looked like he was going to die. I panicked and put the filter back on. And he started to swim again. At that point I did not know if I could rescue him and take him home because I live about 45 minutes away. I didn’t think he would make it, because I am pretty sure the water had little oxygen in it. I knew if I left him there he would die very soon. I figured that he would have a better chance with me. So I dumped out half the water and carried the tank to my car. I drove home as fast as I could and carried the tank up the stairs to my apartment (a difficult task, because I am 5 feet tall, 110lb, and my stairs are steep). I added treated water to his tank, but it was still cloudy. Now I could see him a little better. It was so sad he was just laying there on the bottom. He wasn’t swimming, but he was breathing. I thought Oh crap he is going to die. The next day he was still at the bottom, but he would get up and swim a little, then lay back down at the bottom again. I also noticed he was starting to develop fin rot. I began treatment right away. So I told myself if he would make it through the rest of the week than I would go buy a 30 gal tank for him to live in. I know before you go shouting, remember I am new at this aquarium thing, and the only fish I ever kept is a betta. I did some research on the internet and this forum and found out that the minimum for a single oscar is 55 gal some say 75. Oh my, was I surprised... I really didn’t want a tank that large, but I had to do what was right. Went to the pet store and discovered that a 55 gallon tank alone was way too much for my budget, I didn’t even bother looking at the 75. I left empty handed. Luckily my husband had a cousin who was selling his 55 with everything in it for $125. The tank wasn’t in the best condition, but the filter and pumps where nice. Now I am in the process of resealing the tank. I figured the Oscar has been living in that ten gallon tank for a year, that another week or so won’t hurt him. Oh and the oscar is doing just fine he will live. He has been moving around alot more, fin rot stopping, and has been eating better. I will move him into a bigger tank when I get it completely set up and when done with treatment. I think he is a little bit too weak for me to just move him into the big tank now. I don’t want to stress him out more than he already is. I can’t wait to see him in his new home. Any tips on how I need to move this oscar into his new home without stressing him to death? Oh and any suggestion on names for this fish would be more than welcome. (not sure if it really is a boy). Now the moral of the story...... Please don't buy a fish you can't take care of and please no oscar in a 10 gallon tank. Thanks for reading my story.