API® NITRA-ZORB is a ready-to-use filter media pouch that can be added to your filter to remove ammonia, nitrite, and nitrate. NITRA-ZORB is made of natural and synthetic ion-exchange resins that selectively remove toxins from freshwater aquariums. NITRA-ZORB is completely phosphate-free and can be reused after recharging.

We’ve proven how well NITRA-ZORB works in reducing ammonia and nitrite levels!  Do you want to know how? Check out the Science Inside article here.

DIRECTIONS FOR USE:

Rinse pouch under tap water.  Place pouch in path of water flow in the aquarium filter.  For a new aquarium or when ammonia or nitrite is detected:  recharge every 5 days for the first month, and then every 2 weeks for the second month.  For an established aquarium: recharge every 2 weeks.  When nitrate is detected: recharge every 5 days until nitrate is reduced to 20ppm (mg/L) or less.  Replace pouch after 2 months.