Main equipment of an NFT system. Made of 100% virgin HDPE and can be extruded at almost any length. Also named troughs, gullies or tubes. Related Articles: Throwback Thursday - Nutrient Recirculation Pt. 3Glossary: Get Moving NFT SystemHydroponics Business - The Amhydro SolutionHydroponic Seeding TechniquesHow To Start A Hydroponics Business