First off, you should actually be doing 50% water changes every day in a 2.5 gallon tank while you are treating the fish.
The course of treatment should be:
Day1: Remove the filter, Change 50% water then add medicine dose 1 and 2.5 teaspoons of aquarium salt.
Day 2: Change 50% water and 1.5 teaspoons of Aquarium salt.
Day 3: Change 50% water and add medicine dose 2 and 1.5 teaspoons of Aquarium salt
Day 4: Change 50% water and 1.5 teaspoons of Aquarium salt.
Day 5: Change 100% water and clean decorations. Put filter back into tank.
You can keep adding aquarium salt (1 teaspoon per gallon) every time you change the water after that but you should not use the salt for more than 10 days total. You should also keep changing at least 50% of the water daily for another week after day 5.
Last edited by Malvolti; 11-23-2010 at 02:52 PM.