This is the most time-tested cure-all of the fish world. Sometimes called progressive salt-water treatment, it is what the hospital tank most often stands for. It is very simple and has been known to cure ich, fugues, velvet, tail rot, and other malignancies. Many experts swear by it.

Pace the fish in the hospital tank and add one teaspoon of table salt (not iodized) for each gallon of water. Add the same amount of salt that night and twice the next day, again in the morning and at night. If there is no improvement by the third or fourth day, add one more teaspoon of salt each day (just one, not eleven). On the ninth and tenth days, make progressive water changes and check for results.

Related posts:

1. The Basics of Pet Goldfish: Diseases of the Goldfish

2. The Basics of Pet Goldfish: Fin Congestion

3. The Basics of Pet Goldfish: Leeches (highly contagious)

4. The Basics of Pet Goldfish: Velet and Fungus

5. The Basics of Pet Goldfish: Fish Pox (probably not contagious)

6. The Basics of Pet Goldfish: Emergency Cleaning

7. The Basics of Pet Goldfish: Feeding Fry

8. The Basics of Pet Goldfish: Swim Bladder Problems (not contagious)

9. The Basics of Pet Goldfish: Fish Lice (highly contagious)

10. Understanding Osmotic Pressure, General Salt Content, and Conductivity in the Aquarium