* Impurities: Table salt often contains additives like iodine, anticaking agents, and other substances that can be harmful to fish.
* Incorrect Composition: Aquarium salt needs a specific ionic balance (mainly sodium chloride, but also magnesium, calcium, and potassium). Table salt doesn't have this balanced mix.
What to do instead:
* Buy aquarium salt: Aquarium salt is specially formulated for fish tanks and is readily available at pet stores and online. It's a safe and effective option for treating various aquarium problems.
* Use a salt mix: For specific situations, you might use a salt mix that's designed for treating particular conditions, such as fin rot or parasites.
Never use:
* Rock salt: Rock salt is used for melting ice and can contain harmful impurities.
* Sea salt: Sea salt is too unpredictable in composition and may contain bacteria or parasites.
Remember: Always follow the instructions on the aquarium salt packaging for correct dosage and application. Too much salt can be harmful to your fish.