Dimart Aquarium Water Changer Hose Vacuum Water Gravel Filter Cleaner Siphon Pump Manual Cleaner Pump for Aquarium Fish Brand-new, unused, unopened, undamaged,high quality items. Excellent helper to change water & clean the gravel. This aquarium water changer is made from good quality plastic material which could ensure a long time use. Ideal for use when replacing water in aquarium tank without damage to fishes Unique filter allows dirt in sand to be discharged along with water