CrystalClear Vanish PLUS is a water conditioner that will immediately remove chlorine, chloramine, heavy metals and ammonia that are often present in city water supplies. Vanish PLUS will also add a slime coat protectant to the water to help fish heal wounds and abrasions while protecting them in times of stress such as during water changes & clean-outs. Shake well before use. Apply 1 ounce of Vanish PLUS for every 200 gallons to an area of the pond with the most circulation to ensure the product will be dispersed throughout the entire pond. Apply as needed when new water is introduced to the pond.