The FX Gravel Vac quickly connects to all Fluval FX series canister filters for the ultimate convenience in powered substrate cleaning.
key features
Effectively traps dirt and debris
Integrated filter housing with Fine and Super Fine vacuum bags (Item # A372 and A373 - sold separately).
1 x fine vacuum bag included.
Thumb-operated flow control 
Gravel guard prevents clogging 
Vacuum head with grooved design for efficient debris collection 
Tube extension included for larger tanks and hard to reach areas
Easily stores within FX lid-mounted clips (2nd gen FX4/6)
For use in freshwater and saltwater aquariums