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NITRA-ZORB filtration media is scientifically proven to remove aquarium toxins.


  • Removes ammonia, nitrite, and nitrate

Follow API Easy Care Guide and use NITRA-ZORB when:

  • Addressing Water Solving Problems to remove ammonia, nitrite, & nitrate

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: 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. 

To recharge: Dissolve 4 tablespoons (80 g) of API® AQUARIUM SALT in 8 oz. (240 ml) of warm tap water.  Soak pouch for 2 hours, then rinse lightly in tap water.  When not in use, store pouch in recharging solution. 


Item #:

110A 1 pouch


Other NITRA-ZORB filtration media:

For API nexx™ & RENA SmartFilter™

Item # 776A NITRA-ZORB Size 4 (2 pack)

For SUPERCLEAN 5-20 power filters:

Item #780F NITRA-ZORB (1 PK)

For SUPERCLEAN 30 power filters

Item #781F NITRA-ZORB (1 PK)

For SUPERCLEAN 50 power filters

Item #782F NITRA-ZORB (1 PK)

Water Problem Solving