Boyu Gravel & Sand Cleaning Siphon with Valve Control
- Submerge gravel and sand vacum cleaner inside aquarium.
- Pls other end hose into a bucket.
- Open up Flow Contro; Valve.
- Start Squeezing the Auto Siphon Pump until a siphon is created.
- Remove fish waste and debris by lowering gravel vaccum on gravel.
- Abjust Flow control valve as needed for different size aquariums.
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