100% Light-Blocking PVC Nft Grow Channel Hydroponic Nft System for Lettuce

100% Light-Blocking PVC Nft Grow Channel Hydroponic Nft System for Lettuce. It's perfect for growing leafy vegetables and various lettuce. Trapezoidal base design, help water to stay at center of bottom, so roots can always get water. Anti-UV, environmental friendly material available, heavy metal free. Life time is more than 10 years. Reduced Labor Costs. Energy Efficiency :Improve 25-30% Production Yield . Adjustable Sunlight Absorption. Optimized Space Utilization: It enables a horizontal dense close-row gutter system instead of having intervals between gutters, which further enhances the utilization of non-productive space.