Marine salt (usually about 77% sodium chloride) contains additives and minerals that increase salinity, and can adjust pH, KH and GH to promote the balance of marine ecosystems. Aquarium salts (usually 100% sodium chloride) do not contain any additives and have little effect on pH, KH and GH, but are not suitable for maintaining marine life.
"Aquatic salt" is sodium chloride. Marine salt is also sodium chloride, but marine salt is different because it contains calcium and magnesium ions. Using "aquarium salt" in an aquarium will increase salinity, but there is no calcium or magnesium. The use of sea salt in freshwater tanks has many advantages, but it also causes great changes in alkalinity and PH and GH values, which have a great impact on some fish.
Both aquarium salt and sea salt can maintain aquarium tanks, but can not be interchanged. In most cases, it should be considered that two completely different substances have different applications. Specifically different from fish, some freshwater fish have strong adaptability and can use sea salt, but some are very sensitive to changes in PH, such as the best use of aquarium salt.