Gravel Cleaner 458mm (BOX of 36)

Boyu Gravel Cleaner 458mm (18inch) Gravel cleaner/fish strainer. Submerge gravel vacuum cleaner inside aquarium and other end in bucket (outlet must be lower than water level) move cylinder up and down to rapidly until a siphon is created, removes fish waste and debris by lowering gravel vacuum on gravel.