The biOrb Cleaner Pump is a versatile and efficient tool for performing water changes in your aquarium. With its easy-to-use handheld design, you can effortlessly remove old water without any hassle. The siphon cover ensures that waste and debris are effectively removed from the water, while still being fish-safe and removable. Using gravity and pressure, the hand pump efficiently moves the water out of your aquarium and into the container of your choice. To make cleaning larger aquariums easier, the nozzle extension can be attached to increase reach by 12 inches, and the siphon extension provides an additional 4 inches of reach. No matter the size or model of your aquarium, the biOrb Cleaner Pump will work effectively to remove water and keep your aquarium clean and healthy.