API Phos-Zorb for the API Nexx and Rena SmartFilter selectively removes ammonia, nitrite, and nitrate from freshwater and saltwater aquariums. It also removes phosphate, a by-product of fish metabolism and decaying organic matter and an additive in some tap water supplies, aquarium products and filtration media.

• Easy to use filtration media
• Eliminates cloudy water caused by phosphates
• Will not remove trace elements and will not affect pH

Sizing:
Size 6: Aquariums up to 55 Gallons

Directions: Each pouch is effective for up to 2 months. Change regularly for maximum effectiveness.