So my girlfriend and I won a goldfish at a fair (I know, don't roll your eyes) and I have become quite emotionally attached to him. I live in a college dorm so I was only able to get a 5 gallon tank with an LED light and an Aqueon filter that takes the smallest cartridges. I understand that goldfish need 20 gallons or more, but this is just temporary (maybe for about a year or so) and I want to know the best ways to ensure he is healthy in this kind of environment. I failed to properly start the aquarium, so the ammonia levels are high. Im currently using Quick Start and Stress Coat and plan do to regular water changes weekly. (I made the mistake of changing the first filter too soon).
Any advice?
Any advice?