Instruction: •Connect the suck-up bottle with syphon hose and pump the rubber ball to makes the flow starts. Clean the gravel by water circulation inside the suck-up bottle, adjust the valves beside the rubber ball to control the water flow, than the sludge and waste can be sucked out magically. (hang down the balance of hose lower than aquarium, and now the narrow of the valve is directed out from the aquarium) •Remove the end hose to be connected to faucet, change the direction of the valves to fill up the water.

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