The Fluval U4 internal filter has three stage filtration and is ideal for use in
fresh, marine or reptile environments.
Stage 1 foam removes large
Stage 2 poly/carbon cartridge traps fine debris, improves
water clarity and removes impurities.
Stage 3 BIOMAX provides optimal
biological filtration efficiency.
For aquariums from 130L to 240L
3 way flow control with adjustable output
Flip-Top access for quick and easy cartridge replacement
2 foam pads, 2 poly/carbon cartridges & 40g Bio-Max
1 Venturi, 2 Output diverters
180cm line cord