Healthy Fish Tip #3 - Don’t use too many chemicals or products: Using pH adjusters or chemicals to clear the water is usually not a very good method to keep healthy fish. Also keep in mind that most medicines are very harmful to the fish because they either stress them directly or kill the biological bacteria in your tank that is keeping it healthy. The only chemicals that go into my tanks are tap water, water conditioner to remove chlorine, charcoal in the filters and aquarium salt (if needed). If you need to adjust the pH of the water, you should use rocks or substrate to raise the pH or wood or plants to lower it. This will stabilize the pH and prevent wild swings in pH.

Health Fish Tip #4 – Use a quarantine tank: If you have an established tank with no real problems and follow all of the healthy fish tips above then the chances of the fish in your tank spontaneously contracting a disease is very little. The quickest way to raise this risk is to introduce new fish to your tank that have come fresh from the fish store. It does not matter how good the fish store has been in the past, the fact of the matter remains that fish stores have a lot of fish coming in and going out so the chances are greatly increase for the risk of disease infection. I always quarantine my fish in a 20 gallon quarantine tank for 3 weeks prior to introduction into an established tank.