Fluval U4 Clearmax

Fluval Poly/Clearmax filter 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. The filter cartridge helps reduce overall aquarium maintenance. It is ideal for freshwater and marine environments and designed for Fluvals U2 Underwater Filter. Contains 2 cartridges Key Features - Filter cartridge helps control green water and unsightly algae growth by adsorbing and trapping phosphate, nitrite and nitrate - Effectively produces crystal clear water, reduces odors, and creates ideal conditions for fish and plants - Helps reduce overall aquarium maintenance - Ideal for freshwater and marine environments - Designed for Fluvals U4 Underwater Filter - Contains 2 cartridges Also Available: - A492 Fluval U4 Poly/Carbon Cartridge - A488 Fluval U4 Foam Pad - A495 Fluval U2/U3/U4 Biomax