API® POND AMMO LOCK ammonia detoxifier serves as a source of nutrition for good bacteria in your pond’s natural biological filter. It also detoxifies poisonous ammonia, which is continually produced in your pond by waste, to a safe form for fish.

This product eliminates ammonia stress, and promotes healthy gills and a safe pond environment for your pond fish.

Add 0.25 cup for each 250 gallons of pond water or 1 cup for each 960 gallons.