Natural Fish Tonic

An all natural sea salt that replaces electrolytes which fish lose in times of stress, including potassium, sodium, chloride, calcium and magnesium. All of these are essential for the uptake of oxygen and the release of carbon dioxide and ammonia. While water evaporates, salt does not. Add more salt only after making a water change. If you take out 100 gallons of water, add only enough salt to treat the amount of water you add back to the pond (100 gallons). The PondCare Salt level test kit makes adjusting the salt level easy. Helps eliminate the toxic effects of nitrite.