A friend of mine has a 2 gallon tank with 2 goldfish in it he's had set up since the summer. I have a 30 gallon that I've had for 3 years, so I'm very familiar with cycling and the fact that goldfish should be in a larger tank. However, he already has it set up. I was wondering if it's possible to cycle a tank that small. Right now he's changing all the water about once a month, which I can just imagine is pretty awful for the fish, despite what they already are dealing with. He said they're the .01 cent feeder fish. He got them for his son when the won his son won at the fair died. Is there anything really that can be done?