Aquarium Water Changer Manual Mini Gravel Sand Cleaner Fish Tank Siphon Cleaner Cleaning Tools Sand Washing Device with Suction Cup

Such as when used in accordance with the proper use of suction, no water should be checked at both ends of the balloon connecting pipe is loose, resulting in leakage, as determined plugged in by hand after the blocked outlet with tap water from the water into the mouth until the tube filled with water, after two hold hands shake a few times after return to normal. (New products difficult to discharge air pipe, this method can solve)