Aquatic Solutions High Quality Sodium Zeolite 50 LB Bag. (Freshwater Use Only) Can be regenerated up to 4 times in a salt water solution 4x8 Mesh Made in USA.
Directions: Use 1 gram zeolite for every 1.5 mg of ammonia to be removed. To remove 1 ppm (1 mg/L) ammonia from 10 gallons (38 liters) of water, use a minimum of 25 grams (.13 lbs) zeolite (38 mg 1.5 = 25).
