Fluval U4 Poly-Max Cartridge helps control green water and unsightly algae growth by adsorbing and trapping phosphate, nitrite and nitrate. It effectively produces crystal clear water, reduces odors, and creates ideal conditions for fish and plants.

Features:

• Chemical filter media
• Produces crystal clear water, reduces odour, and creates ideal conditions for fish and plants
• Helps reduce overall aquarium maintenance
• Suitable for freshwater, saltwater or reptile environments
• Convenient 2-pack format
• 2 x poly/clearmax filter cartridge included

Designed for the Fluval U4 Underwater Filter.

Pack contains 2 cartridges.