LiquidLife
Fish Fanatic
Like human meds, you should only use a med when it is needed or the baddies start to develop immunities to it and then won't respond when you do need to medicate. Plus you are wasting your money and could be compromising your fish's natural defenses. Most of hte time, keeping hte water clean and cleaning the tank at reasonable intervals (depending on the size), being careful about what you put into the tank (hands, new toys, new fish, etc.) will keep things healthy.