The Python Pro-Clean Gravel Washer & Syphon Kit is perfect for the beginner and experienced hobbyist alike. It effectively separates and removes debris from your aquarium while you perform routine water changes. This special kit also includes the Python Squeeze Syphon Starter. This handy accessory eliminates the need to start a syphon with your mouth. The Python Pro-Clean and Squeeze accessory are both constructed using only the highest quality materials. The large size is ideal for aquariums from 20 to 208.2ls in size.