How Much Salt Per Gallon for Saltwater Aquarium?
A saltwater aquarium should have a specific gravity of approximately 1.025 for marine fish and invertebrates to thrive in the environment. This translates to about 35 grams of salt per gallon, or 5 tablespoons of aquarium-grade sea salt mix per each US gallon (3.785 liters) of water. It is important to only use high-quality sea …