Fluval U4 Underwater Filter - the new internal power filter from Hagen.
For aquariums 130-240 L (29-53 UK gallons)
3 stage filtration with BIOMAX for superior water quality
Adjustable 3-way flow
Simple to use
Fluval Underwater Filters with 3 stage filtration are ideal for use in freshwater, 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.