Waste Remover: Equipped with a check valve to prevent backflow into the aquarium, this siphon ensures that waste is fully transferred to the upper cylinder. To avoid backflow, avoid rapid, repeated pressing of the airbag. Press the airbag, wait for the waste to be sucked in, and then press again to maintain cleanliness. Plant Fertilizer: This siphon allows for precise fertilization directly at the roots of aquatic plants, enhancing their growth and vitality. Simply load the fertilizer, invert the tube to prevent spillage, and release it at the desired location by pressing the airbag under water. Coral and Fish Feeder: Customize the feeding process by controlling the speed and size of the food dispensed, ensuring your aquatic life receives the right amount of nutrition without waste. The design prevents food from spilling out until it is released into the water. Adjustable Length: With a range of 13 to 21 inches, this siphon is versatile for different tank depths, making it suitable for a variety of aquarium sizes. Adjust the length according to your needs for efficient maintenance and feeding. Usage Tips: After loading the siphon with fertilizer or food, keep it inverted to prevent spillage. When ready to use, submerge the tube in water, press the airbag to release contents at the target location, ensuring precise application and minimal waste. Color: Black & Transparent Material: plastic Package Contents: 1*Fish waste cleaning Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.