Lee's clear high quality, thick-walled plastic tubing is essential for conveying fluid from your high-flow aquarium or pond devices. The clear plastic tubing structure is camouflaged in almost any environment: indoor or outdoor. The inner plastic tubing wall is slightly undersized to ensure proper, tight fit. Clear plastic tubing is conveniently marked at each foot for simple measuring. Clear plastic tubing is ideal for use with all kinds of Pond Water Pumps and other related Aquarium accessories.