The Laifoo 50 ft. Aquarium Water Changer Gravel & Sand Cleaner is a convenient way to keep your aquarium clean and fresh. The water changer features two-in-one functionality, allowing you to siphon out impurities and turbid water as well as refill clean water. It’s made from odorless elastic plastic that’s durable and anti-kinking, making it ideal for long-lasting use. The gravel tube is sinkable and has a filter screen inside, while the siphon ball is easy to use. The Laifoo 50 ft. Aquarium Water Changer Gravel & Sand Cleaner is backed by a 3 month warranty, so you can be confident in its quality.