Hello, I have had my Crowntail Betta for about 5 months in a 1 gallon tank. I know, the tank is small, but I got the tank for my last Birthday gift. Anyways, My Betta Sparky doesn't seem as active as he used to be. His fins look like they are melting away and they have a white spot on the end of his tail and a red spot on one side of his tail. Does he have Fin Rot? Can I treat him with Aquarium Salt and a lot of water changes? I do a 100% water change once a week and I clean his tank once a week. I add 1/2 Teaspoon of Aquarium Salt per gallon each time I clean his tank. He is hiding right now and he hides more than often. He still eats with no probem. I told my parents that I want a bigger than for my birthday. My birthday isn't that far away and it is November 22nd. My dad was on the computer today and he was looking at a cheap 5 gallon tank on walmart.com and it was rated 5 stars and it has a filter. If I get this tank, Will this make him happier and maybe make whatever he was go away? Should I use 1 Teaspoon of salt per gallon instead of 1/2 teaspoon of salt because he is sick? Please help me. He has two hiding spots by the way.