$ 19.99 (1 gallon)

An all-natural sea salt that replaces electrolytes, such as potassium, sodium, calcium, and magnesium. They are essential for the uptake of oxygen and the release of carbon dioxide and ammonium, which fish lose in times of stress. Temporarily blocks the toxic effects of nitrite. Safe for plants.

Also available in 1 quart ($3.99), 1/2 gallon ($6.99)