Things You'll Need
- Tablespoon
- Teaspoon (if aquarium holds less than 5 gallons of water)
Instructions
Adding Salt to a Freshwater Aquarium
Remove any live plants from the aquarium. Many freshwater plants will not tolerate aquarium salt.
Measure 1 rounded tbsp of aquarium salt for every 5 gallons (19 liters) of water, or 1/2 tsp of aquarium salt for every 1 gallon (3.8 liters) of water.
Pour the measured aquarium salt onto the water surface. The salt will sink to the aquarium floor.
Observe fish for any change in appearance or behavior. If fish lose coloration or appear lethargic after the addition of aquarium salt, siphon salt from the aquarium. If fish do not regain color and vigor, contact a local pet store for professional advice.