Fluval U4 Filter Clearmax Cartridge

• 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
• Designed for use with the Fluvial U4 Underwater Filter
• 2 pieces of media

Product Description Fluval U4 Poly-Max aquarium filter 2 in 1 cartridge, controls algae for crystal clear water, genuine Fluval media. Directions Use with Fluval U4 Underwater Filter to control green water and algae, remove phosphates, nitrites, and nitrates. Replace cartridge as needed. Safety Warning Please read the product description before use. Box Contains 2 Cartridges