Fluval "U" Underwater Filter Size:"U2" Its unique design with large

Its unique design with large interior indentations work to slow eating

A warning system quickly shows low battery level

sparkling aquarium water

Balanced minerals for strong bones & teeth

Regular application helps to competitively exclude the establishment of undesirable bacteria in aquariums

Fluval "U" Underwater Filter Size:"U2" Its unique design with largeFluval underwater filters with three stage filtration are ideal for use in fresh, marine or reptile environments. Stage 1 foam removes large particles. Stage 2 poly carbon cartridge traps fine debris, improves water clarity and removes impurities. Stage 3 BIOMAX provides optimal biological filtration efficiency. For aquariums, terrariums and turtle tanks Ideal supplemental or stand alone filter, or for installations where external filtration is not