The Laifoo 25ft Aquarium Vacuum Gravel Cleaner is a versatile tool that can be used to siphon fish faeces, impurities, and turbid water out of your fish tank and refill clean water by switching connectors. The gravel tube is sinkable and has a filter screen inside, so it won’t disturb the fish or decor when it’s working. The hose is made from elastic clear plastic and is durable and anti-kinking. The siphon ball is easy to use, just pinch it for 3 to 5 times and the water will flow out automatically. The warranty is 3 months after the date of purchase, so if you have any questions about the product, don’t hesitate to contact our professional after-sales service.