Fluval Poly/Clearmax Cartridge - 2 Pack

Fluval Poly/Clearmax Filter Cartridges help control green water and unsightly algae by adsorbing and trapping phosphate, nitrite, and nitrate. This dual-action filtration produces crystal-clear water, reduces odors, and creates a healthier environment for fish and plants while lowering overall aquarium maintenance.
Designed for use in Fluval U2 and U3 Underwater Filters, these cartridges are suitable for both freshwater and marine aquariums.
Fluval Poly/Clearmax Filter Cartridges help control green water and unsightly algae by adsorbing and trapping phosphate, nitrite, and nitrate. This dual-action filtration produces crystal-clear water, reduces odors, and creates a healthier environment for fish and plants while reducing overall aquarium maintenance.
These cartridges are filter-specific and designed to fit either Fluval U2 or Fluval U3 Underwater Filters. Please select the correct option for your filter model.