Description: EASY TO USE- Installed gravel cleaner,please keep the water level between the MAX and MIN,then strat switch.When the outlet can draw water,raise the gravel cleaner,let the head and outlet above the water. CLEANING FUNCTION- Can clean gravel, siphon the fish excreta and other dirt out effectively without requiring a water change. PLEASE NOTE- Ideal for complete aquarium cleaning or quick spot maintenance and actually continuous work within 20 minutes. FEATURE AND ACCESSORIES- High safety performance，only need 2 size C type alkaline battery(not included). Features: .
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